A PACKAGING UNIT FOR HYGIENE ARTICLES

Abstract

A packaging unit for hygiene articles and a method for producing the same. The packaging unit is formed from a sheet of material having an inner surface and an outer surface. The inner surface has an edge zone. The sheet has at least one folding axis and the folding axis divides the sheet into a first region and a second region. The sheet may be folded along the folding axes with the first and second regions in an overlapping configuration, and at least a part of the edge zone is provided with microencapsulated adhesive.

Claims

1. A packaging unit for hygiene articles, said packaging unit being formed from a sheet of material having an inner surface and an outer surface, said inner surface comprising an edge zone, said sheet having at least one folding axis, said folding axis dividing said sheet into a first region and a second region, said sheet being folded along said folding axes with said first and second regions in an overlapping configuration, wherein at least a part of said edge zone is provided with microencapsulated adhesive.

2. The packaging unit according to claim 1, wherein at least said edge zone of said first and second regions is provided with microencapsulated adhesive.

3. The packaging unit according to claim 1, wherein the microencapsulated adhesive is applied on 10-50% of the area of the sheet of material.

4. The packaging unit according to claim 1, wherein the microencapsulated adhesive is distributed over substantially the whole inner surface of the sheet of material.

5. The packaging unit according to claim 1, wherein 0.1-30 g/m.sup.2 of microencapsulated adhesive is added to the sheet of material.

6. The packaging unit according to claim 1, wherein said edge zone is provided with a first sealing means for sealing said first and second regions.

7. The packaging unit according to claim 6, wherein said first sealing means is selected from mechanical, heat and adhesive.

8. The packaging unit according to claim 7, wherein the adhesive of the first sealing means is an adhesive having an adhesive strength between 0.3 and 3.5N.

9. The packaging unit according to claim 7, wherein the mechanical sealing means is selected from the group consisting of embossing, ultrasonic welding and hook and loop fasteners.

10. The packaging unit according to claim 1, wherein said packaging unit is reclosable by means of said microencapsulated adhesive.

11. The packaging unit according to claim 1, wherein said sheet of material is substantially rectangular and comprises longitudinal edges, transverse edges and corner portions, wherein said edge zone of said first and second regions of said sheet of material is arranged along said longitudinal edges.

12. The packaging unit according to claim 1, wherein said sheet of material comprises transverse edge zones and wherein at least a portion of one of said transverse edge zones is provided with microencapsulated adhesive.

13. The packaging unit according to claim 1, wherein said edge zone has an inner edge portion and an outer edge portion and at least one of said inner edge portion and said outer edge portion of said edge zone is being-provided with microencapsulated adhesive and at least one of said inner edge portion and said outer edge portion of said edge zone is provided with a first sealing means.

14. The packaging unit according to claim 13, wherein the outer edge portion of said edge zone is provided with microencapsulated adhesive.

15. The packaging unit according to claim 13, wherein the inner edge portion of said edge zone is provided with a first sealing means.

16. The packaging unit according to claim 1, wherein said sheet has two folding axes, dividing said sheet into a first region, a second region and a third region.

17. The packaging unit according to claim 16, wherein said sheet is folded along said folding axes with said first, second and third regions in an overlapping configuration.

18. The packaging unit according to claim 1, wherein said packaging unit is for individually wrapping an absorbent article.

19. The packaging unit according to claim 1, wherein the packaging unit enclose an absorbent article comprising at least a topsheet and a backsheet.

20. A method of forming a packaging unit for hygiene articles, said packaging unit being formed from a sheet of material having an inner surface and an outer surface, said inner surface comprising an edge zone, said sheet having at least one folding axis, said folding axis dividing said sheet into a first region and a second region, said sheet may be folded along said folding axes with said first and second regions in an overlapping configuration, wherein the method comprises the step of providing microencapsulated adhesive on at least a part of said edge zone.

21. The method according to claim 20, wherein said edge zone is further provided with a first sealing means for sealing said first and second regions.

22. The method according to claim 20, wherein the first sealing means is selected from the group consisting of mechanical, heat and adhesive.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0060] The disclosure will now be described by way of example, referring to the drawings.

[0061] FIG. 1A-1C shows the edge sealing pattern of a packaging unit having one folding axis in an open and a folded state.

[0062] FIG. 2A-2C shows the edge sealing pattern of a packaging unit having two folding axes in an open and a folded state.

[0063] FIG. 3A-3B shows the edge sealing pattern of a packaging unit having one folding axis in an open and a folded state.

[0064] FIG. 4 shows the edge sealing pattern of a packaging unit in an open state.

[0065] FIG. 5A-5B shows the edge sealing pattern of a packaging unit having one folding axis in an open and a folded state.

[0066] FIG. 1A-1C depicts a packaging unit 1 for hygiene articles according to the present disclosure. The packaging unit is formed from a sheet of material having an inner surface 2 and an outer surface 3, the inner surface has an edge zone 4 having a longitudinal edge portion 4 and a transverse edge portion 4 and is provided with microencapsulated adhesive on at least a portion thereof such as along the longitudinal edge portion 4. The sheet has a folding axis 5, wherein the folding axis 5 divides the sheet into a first region 7 and a second region 8. The sheet of material may further have a transverse edge portion 6 free from adhesive forming a grip tab.

[0067] FIG. 2A-2C depicts a packaging unit 1 for hygiene articles according to the present disclosure. The packaging unit is formed from a sheet of material having an inner surface 2 and an outer surface 3, the inner surface has an edge zone 4 having a longitudinal edge portion 4 and a transverse edge portion 4. The sheet has two folding axes 5, wherein the folding axes 5 divides the sheet into a first region 7, a second region 8 and a third region 9. The edge zone 4 is provided with microencapsulated adhesive on at least a part thereof, such as along the longitudinal edge portions 4 of the first 7 and third 9 regions. The sheet of material has a transverse edge portion 6 free from adhesive forming a grip tab. The folded packaging in FIG. 2B is provided with a first ultrasonic seal along the inner edge portion of the edge zone 4.

[0068] FIG. 3A-3B depicts a packaging unit 1 for hygiene articles according to the present disclosure. The packaging unit is formed from a sheet of material having an inner surface 2 and an outer surface 3, the inner surface has an edge zone 4 having a longitudinal edge portion 4 and a transverse edge portion 4. The sheet has a folding axis 5, wherein the folding axis 5 divides the sheet into a first region 7 and a second region 8. The edge zone 4 of the second region 8 has an inner edge portion 10 and an outer edge portion 11 along its longitudinal edge portion 4 and transverse edge portion 4. The outer edge portion 11 is provided with microencapsulated reclosable adhesive.

[0069] The folded packaging in FIG. 3B is sealed with heat embossing along the inner edge portion 10.

[0070] FIG. 4 depicts a packaging unit 1 for hygiene articles according to the present disclosure. The packaging unit is formed from a sheet of material having an inner surface 2 and an outer surface 3, the inner surface has an edge zone 4 having a longitudinal edge portion 4 and a transverse edge portion 4. The sheet has two folding axes 5, wherein the folding axis 5 divides the sheet into a first region 7, a second region 8 and a third region 9. The edge zone 4 has an inner edge portion 10 provided with reclosable adhesive and an outer edge portion 11 along its longitudinal 4 and transverse edge portions 4 provided with microencapsulated adhesive.

[0071] FIG. 5A-5B depicts a packaging unit 1 for hygiene articles according to the present disclosure. The packaging unit is formed from a sheet of material having an inner surface 2 and an outer surface 3, the inner surface has an edge zone 4 having a longitudinal edge portion 4 and a transverse edge portion 4. The sheet has a folding axis 5, wherein the folding axis 5 divides the sheet into a first region 7 and a second region 8. The longitudinal edge zone 4 of the first 7 and second 8 regions has an inner edge portion 10 partly extending along the longitudinal length of the sheet of material and an outer edge portion 11 substantially extending along the whole longitudinal length of the sheet and is provided with reclosable microencapsulated adhesive. The folded packaging in FIG. 5B is sealed by adhesive being provided on the inner edge portion 10 of the second region 8. The inner edge portion 10 of the first region 7 is provided with release agent.

EXAMPLES

Example 1

[0072] A polymeric film suitable as wrap for hygiene products was used in a converting operation including the making of personal care products for hygiene use. In the converting operation, an encapsulated reclosable adhesive (THL 2181E, Bostik) was applied by slot coating at an amount of 12 g/m.sup.2 onto the polymeric wrap film on the outer edge portion of the edge zone as seen in FIG. 5A, after which the wrap material was sealed around the hygiene products by means of applying a reclosable adhesive (PT 230, Savar) of low adhesive strength of 0.2 N (pull 1) and 1.6 N (pull 2) at an amount of 15 g/m.sup.2 on the inner edge portion of the edge zone as shown in FIG. 5A. The wrap was opened and was used to enclose a used hygiene product and sealed through activation of the encapsulated adhesive by external force. After activation of the encapsulated adhesive by external force resulting adhesive strengths of 0.7 N (open 1) and 4.0 N (open 2) were obtained. The high adhesive strength of the post-use glue seal gave a closure rate of more than 85% after 1 h when used for sealing the wrap film around a hygiene product after usage.

Example 2

[0073] A polymeric film suitable as wrap for hygiene products was used in a converting operation including the making of personal care products for hygiene use. In the converting operation, an encapsulated adhesive (Technomelt DM 6170, Henkel) was applied by slot coating at an amount of 6 g/m.sup.2 onto the outer edge portion of the edge zone of the polymeric wrap film as seen in FIG. 2A after which the wrap material was sealed around the hygiene products by means of ultrasonic welding on the inner edge portion of the edge zone. The wrap was opened and used to enclose a used hygiene product and sealed through activation of the encapsulated adhesive by external force. The activated adhesive resulted in a high closure rate of more than 90% after 1 h for wrapped and sealed hygiene products after usage.

Example 3

[0074] A film/nonwoven laminate suitable as wrap for hygiene products was used in a converting operation including the making of personal care products for hygiene use. 13 g/m.sup.2 of an encapsulated reclosable adhesive (PT 234, Savar) was in the converting operation applied by slot coating onto the polymeric wrap film as disclosed in FIG. 3A, after which the wrap material was sealed around the hygiene products by means of heat embossing. The wrap was opened and wrapped around a used product and the encapsulated adhesive was activated by external force. The adhesive strength of the post-use seal gave a high closure rate of more than 75% after 1 h when used for sealing the wrap film around a hygiene product after usage.

Example 4

[0075] A polymeric web material suitable as wrap for hygiene products was used in a converting operation including the making of personal care products for hygiene use. In the converting operation, an encapsulated adhesive (FullCare 8400, HB Fuller) was applied by slot coating on the outer edge portion of the edge zone at an amount of 2 g/m.sup.2 onto the polymeric wrap film as shown in FIG. 5A after which the wrap material was sealed around the hygiene products by means of reclosable adhesive (PT 230, Savar) of low adhesive strength of 0.2 N (pull 1) and 1.6 N (pull 2) at an amount of 16 g/m.sup.2 applied on a part of the inner edge portion of the edge zone as seen in FIG. 5A. The wrap was opened and used to enclose a used hygiene product and sealed through activation of the encapsulated adhesive by external force. The activated adhesive resulted in a high closure rate of more than 95% after 1 h for wrapped and sealed hygiene products after usage.