Non-Toxin Adhesiveless Slipper and Processing Method Thereof

Abstract

Non-toxin adhesiveless slipper includes an upper portion and a lower portion; wherein the upper portion and the lower portion are bonded with each other by an adhesive film. A processing method for bonding an upper portion and a lower portion together, including steps of: a. heat melting the EVA and the EAA to form a fluid compound, and blowing the fluid compound on a bottom surface of the upper portion to form an adhesive film; b. placing an isolated paper on the adhesive film; c. placing the upper portion into a heat-pressing machine to ensure the adhesive film and isolated paper securely attached on the bottom surface of the upper portion; d. placing a rubber sheet on a mold to process a heat pressing and then removing the remaining rubber on the contours of the mold to form the lower portion; e. placing the upper portion and the lower portion into a sectional die, and then processing the heat-pressing.

Claims

1. A non-toxin adhesiveless slipper, comprising: an upper portion and a lower portion; wherein said upper portion and said lower portion are bonded with each other by an adhesive film.

2. The non-toxin adhesiveless slipper, as recited in claim 1, wherein said lower portion are natural rubbers and ethylene propylene rubbers.

3. The non-toxin adhesiveless slipper, as recited in claim 1, wherein raw materials of said lower portion comprises natural rubber, ethylene propylene rubbers, white mineral oil, white carbon, polypropylene, starch-filled substance, vulcanization accelerator, and stearic acid.

4. The non-toxin adhesiveless slipper, as recited in claim 3, wherein the weight ratio of the natural rubber, ethylene propylene rubbers, white mineral oil, white carbon, polypropylene, starch-filled substance, vulcanization accelerator, and stearic acid is 40:33:17:5:5-15:6-15:2-5:3.

5. The non-toxin adhesiveless slipper, as recited in claim 1, wherein said lower portion can be made of synthetic rubber.

6. The non-toxin adhesiveless slipper, as recited in claim 1, wherein said lower portion can be made of thermoplastic polyolenfin.

7. The non-toxin adhesiveless slipper, as recited in claim 6, wherein said thermoplastic polyolenfin comprises ethylene propylene, white mineral oil, and isoprene, wherein the weight ratio of the ethylene propylene, white mineral oil, and isoprene is 33-37:14-17:46-53.

8. The non-toxin adhesiveless slipper, as recited in claim 1, wherein said upper portion of are made of EVA components.

9. The non-toxin adhesiveless slipper, as recited in claim 8, wherein said EVA components comprises EVA, polyoxyethylene, filling agent, natural particles, cross-linking agent, zinc oxide, foaming agent, and stearic acid, wherein the weight ratio of EVA, polyoxyethylene, filling agent, natural particles, cross-linking agent, zinc oxide, foaming agent, and stearic acid is 10-20:30-40:10-15:30-40:0.5-5.5:2.0-3.0:0.8-5.8:10-20.

10. The non-toxin adhesiveless slipper, as recited in claim 1, wherein said adhesive film is a compound film made of EAA(ethylene acrylic acid) and EVA (ethylene-vinyl acetate), and the weight ratio of EAA and EVA is 80-86:14-20.

11. The non-toxin adhesiveless slipper, as recited in claim 1, wherein said adhesive film can be a composite PE film, wherein said composite PE film comprises low density polyethylene and linear and low density polyethylene.

12. A processing method for bonding an upper portion and a lower portion of a non-toxin adhesiveless slipper together, comprising steps of: a. heat melting the EVA and the EAA to form a fluid compound, and blowing the fluid compound on a bottom surface of said upper portion to form an adhesive film; b. placing an isolated paper on said adhesive film; c. placing said upper portion into a heat-pressing machine for 16-20 seconds, and the temperature inside the heat-pressing machine is around 150° C. to 180° C., so as to ensure the adhesive film and isolated paper securely attached on the bottom surface of said upper portion; d. placing a rubber sheet on a mold to process a heat pressing for 45-60 seconds, and a pressing temperature is around 150° C. to 180° C., and then removing the remaining rubber on the contours of said mold to form said lower portion; e. placing said upper portion and said lower portion into a sectional die, and then processing the heat-pressing for 240-300 seconds, and the heat-pressing temperature is around 150° C. to 200° C.

13. The processing method, as recited in claim 12, wherein in said step a, said adhesive film is a porous film.

14. The processing method, as recited in claim 12, wherein in said step a, said adhesive film is a compound film made of EAA(ethylene acrylic acid) and EVA (ethylene-vinyl acetate), and the weight ratio of EAA and EVA is 80-86:14-20.

15. The processing method, as recited in claim 12, wherein in said step a, said adhesive film can be a composite PE film, wherein said composite PE film comprises low density polyethylene and linear and low density polyethylene.

16. The processing method, as recited in claim 12, wherein in said step a, said upper portion of are made of EVA components.

17. The processing method, as recited in claim 12, wherein in said step a, said EVA components comprises EVA, polyoxyethylene, filling agent, natural particles, cross-linking agent, zinc oxide, foaming agent, and stearic acid, wherein the weight ratio of EVA, polyoxyethylene, filling agent, natural particles, cross-linking agent, zinc oxide, foaming agent, and stearic acid is 10-20:30-40:10-15:30-40:0.5-5.5:2.0-3.0:0.8-5.8:10-20.

18. The processing method, as recited in claim 12, wherein in said step d, said rubber sheet are natural rubbers and ethylene propylene rubbers.

19. The processing method, as recited in claim 12, wherein in said step d, said rubber sheet comprises natural rubber, ethylene propylene rubbers, white mineral oil, white carbon, polypropylene, starch-filled substance, vulcanization accelerator, and stearic acid.

20. The processing method, as recited in claim 19, wherein the weight ratio of the natural rubber, ethylene propylene rubbers, white mineral oil, white carbon, polypropylene, starch-filled substance, vulcanization accelerator, and stearic acid is 40:33:17:5:5-15:6-15:2-5:3.

21. The processing method, as recited in claim 12, wherein in said step d, said rubber sheet can be made of synthetic rubber.

22. The processing method, as recited in claim 12, wherein in said step d, said rubber sheet can be made of thermoplastic polyolenfin.

23. The processing method, as recited in claim 22, wherein said thermoplastic polyolenfin comprises ethylene propylene, white mineral oil, and isoprene, wherein the weight ratio of the ethylene propylene, white mineral oil, and isoprene is 33-37:14-17:46-53.

Description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT

[0022] The following description is disclosed to enable any person skilled in the art to make and use the present invention. Preferred embodiments are provided in the following description only as examples and modifications will be apparent to those skilled in the art. The general principles defined in the following description would be applied to other embodiments, alternatives, modifications, equivalents, and applications without departing from the spirit and scope of the present invention.

[0023] A non-toxin slipper according to a preferred embodiment of the present invention is illustrated, wherein the non-toxin slipper comprises an upper portion and a lower portion, wherein the upper portion is embodied as a shoe pad and the lower portion is embodied as a shoe sole. The main materials of the lower portion are natural rubbers and ethylene propylene rubbers. The raw materials of the lower portion comprises natural rubber, ethylene propylene rubbers, white mineral oil, white carbon, polypropylene, starch-filled substance, vulcanization accelerator, and stearic acid, and the weight ratio of the natural rubber, ethylene propylene rubbers, white mineral oil, white carbon, polypropylene, starch-filled substance, vulcanization accelerator, and stearic acid is 40:33:17:5:5-15:6-15:2-5:3.

[0024] It is worth to mention that the lower portion of the non-toxin adhesiveless slipper can be made of synthetic rubbers. Furthermore, the lower portion of the non-toxin adhesiveless slipper also can be made of the thermoplastic polyolenfin, wherein the thermoplastic polyolenfin comprises ethylene propylene, white mineral oil, and isoprene, wherein the weight ratio of the ethylene propylene, white mineral oil, and is 33-37:14-17:46-53.

[0025] Accordingly, the upper portion of the non-toxin adhesiveless slipper are made of EVA components, wherein the EVA components comprises EVA, polyoxyethylene, filling agent, natural particles, cross-linking agent, zinc oxide, foaming agent, and stearic acid, wherein the weight ratio of EVA, polyoxyethylene, filling agent, natural particles, cross-linking agent, zinc oxide, foaming agent, and stearic acid is 10-20:30-40:10-15:30-40:0.5-5.5:2.0-3.0:0.8-5.8:10-20.

[0026] Accordingly, the lower portion and the upper portion of the non-toxin adhesiveless slipper are bonded with each other by an adhesive film, wherein the adhesive film is a non-toxin adhesive film. The adhesive film is a compound film which is made of EAA(ethylene acrylic acid) and EVA (ethylene-vinyl acetate), and the weight ratio of EAA and EVA is 80-86:14-20. It is worth to mention that the adhesion rate of the adhesive film is larger than the PE (polyethylene) film. Alternatively, the adhesive film also can be a composite PE film, wherein the composite PE film comprises low density polyethylene and linear and low density polyethylene.

[0027] A processing method for bonding the upper portion of the non-toxin adhesiveless slipper on the lower portion of the non-toxin adhesive slipper according to the above mentioned preferred embodiment of the present invention is illustrated, wherein the processing method comprises steps of:

[0028] a. heat melting the EVA and the EAA to form a fluid compound, and blowing the fluid compound on a bottom surface of the upper portion of the non-toxin adhesiveless slipper to obtain an adhesive film;

[0029] b. placing an isolated paper on the adhesive film;

[0030] c. placing the upper portion (the adhesive film and the isolated paper are already placed thereon) into a heat-pressing machine for 16-20 seconds, and the temperature of the heat-pressing machine is around 150° C. to 180° C., so as to ensure the adhesive film and isolated paper securely attached on the bottom surface of the upper portion.

[0031] d. placing a rubber sheet on a mold to process a heat pressing for 45-60 seconds, and the pressing temperature is around 150° C. to 180° C., and then removing the remaining rubber on the contours of the mold to obtain a lower portion of the non-toxin adhesiveless slipper; and

[0032] e. placing the upper portion and the lower portion into a sectional die, and then processing the heat-pressing for 240-300 seconds, and the heat-pressing temperature is around 150° C. to 200° C. in order to combine the upper portion and the lower portion to form an integrity.

[0033] In the step a, the adhesive film is a porous film. It is worth to mention that some gases may be released after the EVA material is heated, so the gases may attached on the adhesive film to cause the broken film, and then the adhesive ability of the adhesive film will be reduced.

[0034] In the step d, the sizes and shapes of the lower portion of the non-toxin adhesiveless slipper are the same as that of the upper portion thereof.

EXPERIMENTAL EXAMPLES

[0035] The non-toxin adhesiveless slipper prepared according to a preferred embodiment of the present invention is tested by the following toxic substance: alkylphenol & alkylphenolethoxylate, banned azo dyes, chlorobenzene and chlorotoluene, chlorophenols, chlorinated solvents, flame retardant, heavy metals, organotin compounds, phthalates, perfluorooctanesulfonates & perfluorooctanoic acid, and shot-chain chlorinated paraffins. The non-toxin adhesiveless slipper is tested which comprises the upper portion M1 and the lower portion M2.

[0036] The test method for alkylphenol & alkylphenolethoxylate is performed as specified in ISO 18218 (modified). The results from the upper portion M1 and the lower portion M2 are shown in Table 1. Remark:-n.d.=not detected.

TABLE-US-00001 TABLE 1 Report Limit Result (mg/Kg) Compounds CAS No. (mg/Kg) M1 M2 Nonylphenol (NP) 25154-52-3 5 n.d. n.d. Octylphenol (OP) 27193-28-8 5 n.d. n.d. Nonylphenolethoxylate 9016-45-9 5 n.d. n.d. (NPEO) Octylphenolethoxylate 9002-93-1 5 n.d. n.d. (OPEO)

[0037] The test method for banned azo dyes is performed as specified in GB/T 17592-2011 & GB/T 23344-2009 for 4-aminozobenzene (modified). The results from the upper portion M1 and the lower portion M2 are shown in Table 2. Remark:-n.d.=not detected.

TABLE-US-00002 TABLE 2 Report Limit Result (mg/Kg) Compounds CAS No. (mg/Kg) M1 M2 Biphenyl-4-ylamine 92-67-1 5 n.d. n.d. Benzidine 92-87-5 5 n.d. n.d. 4-Chloro-o-toluidine 95-69-2 5 n.d. n.d. 2-Naphthylamine 91-59-8 5 n.d. n.d. 4-amino-2′,3- 97-56-3 5 n.d. n.d. dimethylazobenzene 5-nitro-o-toluidine 99-55-8 5 n.d. n.d. 4-chloroaniline 106-47-8 5 n.d. n.d. 4-methoxy-m- 615-05-4 5 n.d. n.d. phenylenediamin 4,4′-methylenedianiline 101-77-9 5 n.d. n.d. 3,3′-dichlorobenzidine 91-94-1 5 n.d. n.d. 3,3′-dimethoxybenzidine 119-90-4 5 n.d. n.d. 3,3′-dimethylbenzidine 119-93-7 5 n.d. n.d. 4,4′-methylenedi-o-toluidine 838-88-0 5 n.d. n.d. 6-methoxy-m-toluidine 120-71-8 5 n.d. n.d. 4,4′-methylene-bis-(2- 101-14-4 5 n.d. n.d. chloro-aniline) 4,4′-oxydianiline 101-80-4 5 n.d. n.d. 4,4′-thiodianiline 139-65-1 5 n.d. n.d. o-Toluidine 95-53-4 5 n.d. n.d. 4-methyl-m- 95-80-7 5 n.d. n.d. 2,4,5-Trimethylaniline 137-17-7 5 n.d. n.d. o-anisidine 90-04-0 5 n.d. n.d. 4-aminoazobenzene 60-09-3 5 n.d. n.d. 2,4-Dimethylaniline 95-68-1 5 n.d. n.d. 2,6-Dimethylaniline 87-62-7 5 n.d. n.d.

[0038] It is worth to mention that 4-amino-2′,3-dimethylazobenzene (CAS No. 97-56-3) and 5-nitro-o-toluidine (CAS No. 99-55-8) are further reduced into o-toluidine (CAS No. 95-53-4) and 4-methyl-m-phenylenediamine (CAS No. 95-80-7). In case of that polyurethane materials are used, it cannot be ruled out that certain amines, e.g. 4,4′-methylenedianiline (MDA, CAS No. 101-77-9) and 4-methyl-m-phenylenediamine (TDA, CAS No. 95-80-7) are released from the PU component and not from a banned azo colorant.

[0039] The test method for chlorobenzene and chlorotoluene is performed as specified in GB/T 20384-2006 (modified). The results from the upper portion M1 and the lower portion M2 are shown in Table 3. Remark:-n.d.=not detected.

TABLE-US-00003 TABLE 3 Report Limit Result (mg/Kg) Compounds CAS No. (mg/Kg) M1 M2 1,2,3,4-Tetrachlorobenzene 634-66-2 0.10 n.d. n.d. 1,2,3,5-Tetrachlorobenzene 634-90-2 0.10 n.d. n.d. 1,2,3-Trichlorobenzene 87-61-6 0.10 n.d. n.d. 1,2,4,5-Tetrachlorobenzene 95-94-3 0.10 n.d. n.d. 1,2,4-Trichlorobenzene 120-82-1 0.10 n.d. n.d. 1,2-Dichlorobenzene 95-50-1 0.10 n.d. n.d. 1,3,5-Trichlorobenzene 108-70-3 0.10 n.d. n.d. 1,3-Dichlorobenzene 541-73-1 0.10 n.d. n.d. 1,4-Dichlorobenzene 106-46-7 0.10 n.d. n.d. 2,3,4,5,6-Pentachlorotoluene 877-11-2 0.10 n.d. n.d. 2,3,6-Trichlorotoluene 2077-46-5 0.10 n.d. n.d. 2,4-Dichlorotoluene 95-73-8 0.10 n.d. n.d. 2,5-Dichlorotoluene 19398-61-9 0.10 n.d. n.d. 2,6-Dichlorotoluene 118-69-4 0.10 n.d. n.d. 2-Chlorotoluene 95-49-8 0.10 n.d. n.d. 3,4-Dichlorotoluene 95-75-0 0.10 n.d. n.d. 3-Chlorotoluene 108-41-8 0.10 n.d. n.d. 4-Chlorotoluene 106-43-4 0.10 n.d. n.d. a,a,a-4-Tetrachlorotoluene 5216-25-1 0.10 n.d. n.d. Hexachlorobenzene 118-74-1 0.10 n.d. n.d. Pentachlorobenzene 608-93-5 0.10 n.d. n.d. Tetrachloro-m-xylene 877-09-8 0.10 n.d. n.d.

[0040] The test method for chlorophenols is performed as specified in ISO 17070: 2015 (IULTCS/IUC 25). The results from the upper portion M1 and the lower portion M2 are shown in Table 4. Remark:-n.d.=not detected.

TABLE-US-00004 TABLE 4 Report Limit Result (mg/Kg) Compounds CAS No. (mg/Kg) M1 M2 4-chloro-3-methylphenol 59-50-7 0.05 n.d. n.d. (CMK) Tetrachlorophenol (TeCP) 25167-83-3 0.05 n.d. n.d. 2-Chlorophenol (2-CP) 95-57-8 0.05 n.d. n.d. 3-Chlorophenol (3-CP) 108-43-0 0.05 n.d. n.d. 4-Chlorophenol (4-CP) 106-48-9 0.05 n.d. n.d. 2,6-Dichlorophenol (2,6-DCP) 87-65-0 0.05 n.d. n.d. 2,5-Dichlorophenol (2,5-DCP) 583-78-8 0.05 n.d. n.d. 2,4-Dichlorophenol (2,4-DCP) 120-83-2 0.05 n.d. n.d. 3,5-Dichlorophenol (3,5-DCP) 591-35-5 0.05 n.d. n.d. 2,3-Dichlorophenol (2,3-DCP) 576-24-9 0.05 n.d. n.d. 3,4-Dichlorophenol (3,4-DCP) 95-77-2 0.05 n.d. n.d. 2,4,6-Trichlorophenol 88-06-2 0.05 n.d. n.d. (2,4,6-TriCP) 2,3,5-Trichlorophenol 933-78-8 0.05 n.d. n.d. (2,3,5-TriCP) 2,4,5-Trichlorophenol 95-95-4 0.05 n.d. n.d. (2,4,5-TriCP) 2,3,4-Trichlorophenol 15950-66-0 0.05 n.d. n.d. (2,3,4-TriCP) 3,4,5-Trichlorophenol 609-19-8 0.05 n.d. n.d. (3,4,5-TriCP) 2,3,5,6-Tetrachlorophenol 935-95-5 0.05 n.d. n.d. (2,3,5,6-TeCP) 2,3,4,6-Tetrachlorophenol 58-90-2 0.05 n.d. n.d. (2,3,4,6-TeCP) 2,3,4,5-Tetrachlorophenol 4901-51-3 0.05 n.d. n.d. (2,3,4,5-TeCP) Pentachlorophenol (PCP) 87-86-5 0.05 n.d. n.d.

[0041] The test method for chlorinated solvent is performed as specified in EPA SW-846 Method 3550C, GCMS/GC-ECD. The results from the upper portion M1 and the lower portion M2 are shown in Table 5. Remark:-n.d.=not detected.

TABLE-US-00005 TABLE 5 Report Limit Result (mg/Kg) Compounds CAS No. M1 M2 1,1,1,2-Tetrachloroethane 630-20-6 5 n.d. n.d. 1,1,1-Trichloroethane 71-55-6 5 n.d. n.d. 1,1,2,2-Tetrachloroethane 79-34-5 5 n.d. n.d. 1,1,2-Trichloroethane 79-00-5 5 n.d. n.d. 1,1-Dichloroethane 75-34-3 5 n.d. n.d. 1,1-Dichloroethene 75-35-4 5 n.d. n.d. 1,2-dichloroethane 107-06-2 5 n.d. n.d. Bromodichloromethane 75-27-4 5 n.d. n.d. Bromoform 75-25-2 5 n.d. n.d. Carbon tetrachloride 56-23-5 5 n.d. n.d. Chloroform 67-66-3 5 n.d. n.d. Cis-1,2-Dichloroethene 156-59-2 5 n.d. n.d. Dibromochloromethane 124-48-1 5 n.d. n.d. Dibromomethane 74-95-3 5 n.d. n.d. Hexachlorobutadiene 87-68-3 5 n.d. n.d. Hexachloroethane 67-72-1 5 n.d. n.d. Methylene chloride 75-09-2 5 n.d. n.d. (Dichloromethane) Tetrachloroethene 127-18-4 5 n.d. n.d. Trans-1,3-Dichloropropene 10061-02-6 5 n.d. n.d. Trans1,2Dichloroethene 156-60-5 5 n.d. n.d. Trichloroethene 79-01-6 5 n.d. n.d. Vinyl chloride 75-01-4 5 n.d. n.d. indicates data missing or illegible when filed

[0042] The test method for flame retardant is performed as specified in GB/T 26125-2011. The results from the upper portion M1 and the lower portion M2 are shown in Table 6. Remark:-n.d.=not detected.

TABLE-US-00006 TABLE 6 Report Limit Result (mg/Kg) Compounds CAS No. (mg/Kg) M1 M2 Hexabromocyclododecane 25637-99-4 10  n.d. n.d. (HBCDD) Polybrominated biphenyls — 10 n.d n.d. (PBB) Polybrominated — 10 n.d n.d. diphenyl ethers Tri-(2,3-dibromopropyl)- 126-72-7 10  n.d. n.d. phosphate (TRIS) Tris(2-chlorethyl)-phosphate 115-96-8 10 n.d n.d. (TCEP) Tris-(1,3- 13674-87-8 10 n.d n.d. dichloropropyl)- indicates data missing or illegible when filed

[0043] The test method for heavy metals is performed as specified in QB/T 4340-2012. Analyzed by ICP-MS. The results from the upper portion M1 and the lower portion M2 are shown in Table 7. Remark:-n.d.=not detected.

TABLE-US-00007 TABLE 7 Report Limit Result (mg/Kg) Compounds CAS No. (mg/Kg) M1 M2 Cadmium (Cd) 7440-43-9 10 n.d. n.d. Lead (Pb) 7439-92-1 10 n.d. n.d.

[0044] The test method for organotin compounds is performed as specified in ISO/TS 6179:2012. The results from the upper portion M1 and the lower portion M2 are shown in Table 8. Remark:-n.d.=not detected.

TABLE-US-00008 Report Limit Result (mg/Kg) Compounds CAS No. (mg/Kg) M1 M2 Tetrabutyltin (TeBT) 1461-25-2 0.02 n.d. n.d. Tricyclohexyltin (TrCyT) 6056-50-4 0.02 n.d. n.d. Monobutyltin (MBT) 78763-54-9 0.02 n.d. n.d. Dibutyltin (DBT) 14488-53-0 0.02 n.d. n.d. Tributyltin (TBT) 36643-28-4 0.02 n.d. n.d. Monooctyltin (MOT) 94410-07-8 0.02 n.d. n.d. Dioctyltin (DOT) 250252-87-0 0.02 n.d. n.d. Triphenyltin (TPhT) 668-34-8 0.02 n.d. n.d. Trioctyltin (TOT) — 0.02 n.d. n.d. Tripropyltin (TPrT) — 0.02 n.d. n.d.

[0045] The test method for phthalates is performed as specified in ISO/TS 16181:201. The results from the upper portion M1 and the lower portion M2 are shown in Table 9. Remark:-n.d.=not detected.

TABLE-US-00009 TABLE 9 Report Limit Result (%) Compounds CAS No. M1 M2 Di-2-ehtylhexyl phthalate 117-81-7 0.0030 0.0048 n.d. (DEHP) Diisobutyl phthalate (DIBP) 84-69-5 0.0030 n.d. n.d. Dibutyl phthalate (DBP) 84-74-2 0.0030 0.18  n.d. Diisononyl phthalate (DINP) 28553-12-0 0.010 n.d. n.d. Diisodecyl phthalate (DIDP) 26761-40-0 0.015 n.d. n.d. Di-n-octyl phthalate (DnOP) 117-84-0 0.0030 n.d. n.d. Bis(2-methoxyethyl) phthalate 117-82-8 0.0030 n.d. n.d. (BMEP/DMEP) Diethyl phthalate (DEP) 84-66-2 0.0030 n.d. n.d. Phtahalic acid, 85-68-7 0.0030 n.d. n.d. benzylbutyl ester (BBP) Di-n-hexyl phthalate (DNHP) 84-75-3 0.0030 n.d. n.d. Dimethyl phthalate (DMP) 131-11-3 0.0030 n.d. n.d. Di-propyl phthalate (DPrP) 131-16-8 0.0030 n.d. n.d. Diisooctyl phthalate (DIOP) 27554-26-3 0.0030 n.d. n.d. Dicyclohexyl phthalate 84-61-7 0.0030 n.d. n.d. Dinonyl phthalate (DNP) 84-76-4 0.0030 n.d. n.d. indicates data missing or illegible when filed

[0046] The test method for perfluorooctanesulfonates & perfluorooctanoic Acid is performed as specified in CEN TS 15968: 2010(E). The results from the upper portion M1 and the lower portion M2 are shown in Table 10. Remark:-n.d.=not detected.

TABLE-US-00010 TABLE 10 Report Limit Result (mg/Kg) Compounds CAS No. (mg/Kg) M1 M2 Perfluorooctanoic acid 335-67-1 0.002 n.d. n.d. Perfluorooctane Sulphonate 1763-23-1 0.002 n.d. n.d. (PFOS)

[0047] The test method for short-chain chlorinated paraffins is performed as specified in ISO 18219:2015 (modified). The results from the upper portion M1 and the lower portion M2 are shown in Table 11. Remark:-n.d.=not detected.

TABLE-US-00011 TABLE 11 Report Limit Result (mg/Kg) Compounds CAS No. M1 M2 Short-chain Chlorinated 85535-84-8 50 n.d. n.d. Paraffins (SCCP) indicates data missing or illegible when filed

[0048] Referring to Table 1 to Table 11, no toxic substances, such as alkylphenol & alkylphenolethoxylate, banned azo dyes, chlorobenzene and chlorotoluene, chlorophenols, chlorinated solvents, flame retardant, heavy metals, organotin compounds, phthalates, perfluorooctanesulfonates & perfluorooctanoic acid, and shot-chain chlorinated paraffins, are detected on both the upper portion and lower portion of the non-toxin adhesiveless slipper in the present invention. Therefore, the non-toxin adhesiveless slipper of the present invention is an eco-friendly slipper, which fulfills th future environmental trends.

[0049] One skilled in the art will understand that the embodiment of the present invention as shown in the drawings and described above is exemplary only and not intended to be limiting.

[0050] It will thus be seen that the objects of the present invention have been fully and effectively accomplished. The embodiments have been shown and described for the purposes of illustrating the functional and structural principles of the present invention and is subject to change without departure from such principles. Therefore, this invention includes all modifications encompassed within the spirit and scope of the following claims.