WOOD-ENCASED PENCIL

Abstract

A description is given of a wood-encased pencil comprising a casing and a core, the casing consisting of wood material impregnated with a saccharide component, the saccharide component comprising at least one mono-, di- or oligosaccharide in solution in a vehicle.

Claims

1. A wood-encased pencil, comprising: a casing consisting of a wood material impregnated with a saccharide component, the saccharide component comprising at least one of a monosaccharide, a disaccharide, or an oligosaccharide in solution in a vehicle; and a core.

2. The wood-encased pencil according to claim 1, wherein the saccharide component comprises at least one monosaccharide and at least one oligosaccharide.

3. The wood-encased pencil according to claim 1, wherein the saccharide component comprises at least one oligosaccharide constructed of glucose units.

4. The wood-encased pencil according to claim 2, wherein the saccharide component comprises a monosaccharide selected from the group consisting of: glucose, galactose, mannose, fructose, arabinose, xylose, ribose, and combinations thereof.

5. The wood-encased pencil according to claim 1, wherein the saccharide component comprises a disaccharide selected from the group consisting of: maltose, lactose, sucrose, and combinations thereof.

6. The wood-encased pencil according to claim 5, wherein the oligosaccharide of the saccharide component comprises maltodextrin with a dextrose equivalent of from 3 to 30.

7. The wood-encased pencil according to claim 1, wherein the saccharide component further comprises a polyol.

8. The wood-encased pencil according to claim 7, wherein the polyol is selected from the group consisting of: pentaerythritol, polyvinyl alcohol, and a combination thereof.

9. A method of impregnating a wood, comprising impregnating the wood with a saccharide component of claim 1 for from 10 minutes to 24 hours at a temperature of 0° C. to 90° C.

10. A method of producing wood having solvent barrier properties, comprising: impregnating the wood with a saccharide component of claim 1 for from 10 minutes to 24 hours at a temperature of 0° C. to 90° C.

11. A composition for generating solvent barrier properties in a wood or a wood substitute, the composition comprising: at least one of a monosaccharide, a disaccharide, or an oligosaccharide.

12. A composition according to claim 11, wherein the composition comprises at least one oligosaccharide constructed of glucose units.

13. The wood-encased pencil of claim 3, wherein the at least one oligosaccharide constructed of glucose units comprises maltodextrin.

14. The composition according to claim 12, wherein the at least one oligosaccharide constructed of glucose units comprises maltodextrin.

15. The composition according to claim 14, further comprising at least one monosaccharide.

16. The composition according to claim 15, further comprising polyvinyl alcohol.

Description

EXAMPLE 1

[0034] Wood material was placed into an impregnating solution containing 40% by weight of glucose in aqueous solution. The wood material was subsequently dried as follows:

Preliminary drying/drip drying 1 h at 25° C.
Heating to 65° C. within 30 minutes

3 h at 65° C.

[0035] Heating to 100° C. within 30 minutes

12 h at 100° C.

[0036] After cooling, the wood material was processed into a boat into which a core had been inserted. Moreover, for comparison, boats of untreated wood material were produced, and were equipped with the same core compound. The composition of the core compound embedded into the cedar wood boats was as follows:

TABLE-US-00001 TABLE 1 INCI - US K K Value Unit Iron Oxides 77491/77492/77499 Z F 28.943%   Synthetic Wax Z B 14.473% Isododecane Z B 12% Polybutene Z B 11.182% Hydrogenated Cottonseed Oil Z B 6.578% Hydrogenated Polyisobutene Z B 5.333% Hydrogenated Polydecene Z B 5.333% Hydrogenated Poly(C6-14 Olefin) Z B 5.333% Simmondsia Chinensis (Jojoba) Seed Oil Z B 3.289% Mica 77019 Z F 1.973% Ceresin Z B 1.579% Ferric Ferrocyanide 77510 Z F 1.316% Ozokerite Z B 1.315% Microcrystalline Wax Z B 1.053% Tocopherol Z B 0.25% Ascorbyl Palmitate Z B 0.05% 100.0000%

[0037] All of the boats were then sealed. The resulting boats were kept in a heating cabinet at 45° C. for 12 weeks. The weight was determined in each case after 1, 2, 3, 4, 10 and 12 weeks and the weight loss was calculated accordingly. All of the values are average values, owing to the use of a plurality of boats for each test. The boats for this purpose were removed from the heating cabinet and weighed after cooling to room temperature.

Boats made of untreated wood material were not impervious to volatile hydrocarbons. After just a week, the pencils were significantly drier, and after 10 weeks they were no longer usable. The cores had contracted. The test was therefore discontinued after 10 weeks.

[0038] Conversely, boats made of wood material treated in accordance with the invention were still impervious even after 12 weeks; the weight loss was minimal, being on average 3.77% by weight. It was found that further criteria, such as decoration, sharpenability, processing, appearance, etc., were positively fulfilled. It was noted, however, that the loading quantity varied among the boats.

EXAMPLE 2

[0039] Different saccharide components according to the invention were tested. For this purpose, wood material was inserted in each case into an impregnating solution as defined in Table 2. The wood material was subsequently processed to boats, in each of which a core was inserted as shown in Example 1.

[0040] In the case of this test, the quality of the wood material was regarded as sufficient in terms of imperviosity if after 12 weeks at 45° C. the weight loss was less than 4% by weight. This value was achieved by all saccharide components according to the invention, as shown in Table 2.

[0041] The compositions and the results are shown in Table 2 below.

TABLE-US-00002 TABLE 2 Weight loss (%) Sample Glucose Maltodextrin 45° C., 12 weeks 1  6.10* 2 40 3.77 3  3 2.78 4 15 2.95 5 30 3.27 *Test discontinued after 10 weeks