JP2000079010A - Bag foundation cloth, its manufacture and bag using the cloth - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain a feeling comparable to vinyl chloride coat, excellent resistance to soil and lightweight handleable properties and to do away with the generation of noxious gas and residues including chlorine and bromine at the time of incineration, and to eliminate the adverse effects of plasticizers and others on health. SOLUTION: On one surface of cloth, a thermoplastic resin layer containing at least a thermoplastic resin is laminated to have surficial water repellency of 80 points or over as measured according to the spray test that is specified in JIS L 10925.2. The thermoplastic resin layer consists of a three-layered lamination 3 where a defoamed layer 5 is laminated over each surface of a foamed thermoplastic resin layer 4, and the thermoplastic resin is an acrylic resin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sports back, leisure back, school back,
The present invention relates to the improvement of luggage used for various bags such as business bags, and more specifically, for bags having improved antifouling properties by improving the water repellency of the surface of a thermoplastic resin layer laminated on the back surface. The present invention relates to a base fabric, a method for manufacturing the same, and a bag using the base fabric.

[0002]

2. Description of the Related Art Conventionally, as a bag using a fiber cloth, a back surface of the bag coated with a synthetic resin is known from the viewpoint of waterproofness and prevention of misalignment. Therefore, vinyl chloride resin is mainly used.

[0003] However, in a bag made of a backing cloth for a bag coated with a vinyl chloride resin, the plasticizer contained in the vinyl chloride resin emerges on the resin surface over time during long-term use, so that dirt easily adheres to the bag. In addition, there is a problem that the adhered dirt is hardly removed. In addition, the weight of the bag itself, which has a high specific gravity of vinyl chloride resin, becomes heavy, and when carrying items inside, the extra load is added by the weight of the bag, so improvement in antifouling properties and weight reduction are desired. ing.

[0004] In addition, some of the plasticizers used are listed as target substances of environmental hormones (endocrine disrupting substances) which have been regarded as a problem in recent years. Voices are also increasing, and it contains chlorine, which has the serious drawback of producing toxic gas, smoke and residue containing chlorine elements during incineration of waste. There is an urgent need to develop bags that do not use vinyl chloride resin containing chlorine for safety.

[0005] From such a viewpoint, olefin resins, acrylic resins, and urethane resins have been proposed as thinned, but all of them are satisfied and the texture of the conventional vinyl chloride resin coated product can be satisfied. Things are unfortunately not yet offered.

[0006]

DISCLOSURE OF THE INVENTION The present invention provides a toxic gas containing chlorine and bromine elements when incinerated, which is excellent in antifouling properties, lightweight and easy to handle, while maintaining the feeling of a conventional PVC coated product. It is an object of the present invention to provide a base fabric for a bag, which does not require any inspection, and has no fear of adverse effects on health due to a plasticizer or the like, a method for producing the same, and a bag using the base fabric.

[0007]

The present invention has the following structure to solve the above-mentioned problems.

That is, a thermoplastic resin layer containing at least a thermoplastic resin is laminated on one surface of the fabric, and the surface of the thermoplastic resin layer has a water repellency of JIS L10.
This is a luggage base fabric having a value of 80 or more measured based on the spray test specified in 925.2. Further, the method of manufacturing a base fabric for a bag according to the present invention is characterized in that a water-repellent treatment is performed after laminating a thermoplastic resin on any one surface of the fabric. Further, a bag according to the present invention is characterized in that the bag fabric according to any one of the above is used such that the thermoplastic resin layer is on the back surface.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION A bag base fabric of the present invention, which describes a preferred embodiment of the present invention, will now be described with reference to a thermal fabric laminated on one side of the fabric (the back side when used as a bag). The water repellency of the surface of the plastic resin layer is JIS 1092 5.2
It has been found that the antifouling property can be improved by increasing the water repellency measured based on the spray test described above to a specific value or more, and furthermore, the thermoplastic resin layer containing bubbles therein contains thermoplastic resin foam. The present inventors have found that a layer (hereinafter, abbreviated as a foam layer) satisfies weight reduction and texture. Further, as the thermoplastic resin, chlorine,
By using an acrylic resin or the like that does not contain bromine and does not contain a plasticizer, there is no generation of toxic gas and residue, and as a bag using the base fabric for the bag and the bag for which there is no concern about adverse effects on health. It is completed.

[0010] The water repellency referred to in the present invention is defined by JIS.
1092 5.2 is obtained by measuring the spray test according to the description, by making the surface water repellency of the thermoplastic resin layer laminated on the back of the backing fabric for a bag 80 points or more,
It is possible to prevent the contamination substance from adhering to the surface, and even if it adheres, it can be easily removed by washing with water or the like. When the degree of water repellency is less than 80 points, the degree of adhesion of dirt on the surface of the resin layer increases, and even when it adheres, it is very difficult to remove. As such a fabric of the present invention, a knitted or woven fabric or a nonwoven fabric obtained by mixing or mixing natural fibers such as synthetic fibers such as polyester, polyamide, vinylon and acrylic and cotton and hemp can be used. good. As the fiber used in the present invention, polyamide fiber can be preferably used from the viewpoint of strength, dye transfer preventing property and the like.

The "back surface" of the bag fabric referred to in the present invention is a surface which comes into the bag when it is made into a bag. In the bag fabric, the substrate on the side on which the thermoplastic resin layer is laminated is used. Refers to the cloth surface.

The foam layer referred to in the present invention is a thermoplastic resin layer containing air bubbles mainly in the inside of the layer, and has a texture similar to that of a conventional vinyl chloride resin-coated bag. In order to achieve this, it is necessary to cover a flexible resin of the same degree as the vinyl chloride resin with a film thickness of the same degree. Therefore, in the present invention, it has been found that, as a structure that satisfies the feeling and weight reduction as a luggage material, foaming a thermoplastic resin layer laminated on the back surface of the cloth has the same or better effect. The form of foaming at this time is not particularly limited, and may be closed cells or open cells, or may be a mixture thereof, and the size of the cells themselves is not particularly limited. However, the foaming ratio of the foamed layer is preferably in the range of 1.5 to 5 times, and more preferably in the range of 2 to 3 times in terms of achieving both flexibility, firmness, waist balance, and mechanical properties of the resin layer. preferable. If the foaming ratio is less than 1.5 times, it is difficult to balance flexibility, firmness, and waist as a bag. On the other hand, if it exceeds 5 times, the mechanical properties of the resin layer are greatly reduced, which is not suitable for practical use. In addition, in order to provide a higher degree of waterproofness, a configuration in which a foamed layer and an unfoamed layer are laminated is good, and in order to effectively provide waterproofness,
It is preferable that the thermoplastic resin layer in contact with the base fabric is an unfoamed resin layer. In order to impart a higher degree of antifouling property, it is necessary to smooth the surface, and a configuration in which an unfoamed resin layer is laminated on the outermost layer is preferable. Therefore, as shown in the longitudinal sectional view of the bag base fabric 1 of the present invention in FIG.
The structure of the thermoplastic resin layer 3 laminated on the back surface of
The most preferred embodiment is a laminate composed of three or more laminates 3 including the foamed layer 4 as an inner layer, and the innermost layer and the outermost layer composed of the unfoamed resin layer 5. Such a material can ensure antifouling property, flexibility and water resistance.

The weight ratio between the foamed layer and the non-foamed layer must be 50 parts by weight or less with respect to 100 parts by weight of the foamed layer from the viewpoint of satisfying the feeling. 40 parts by weight.

In the present invention, as a guide for weight reduction, the amount of resin adhering is defined as the ratio of the base fabric to the resin and the fiber cloth weight of 100%.
100 parts by weight or less, preferably 40 to
80 parts by weight. If the resin coating amount exceeds 100, it is not preferable in terms of weight reduction.

As the thermoplastic resin used in the present invention, those generally used can be used.
From the environmental viewpoint, those containing no chlorine or bromine element are preferable,
Further, from the viewpoint of safety, a material which is flexible without using a plasticizer is preferable. As specific examples of such a resin, a polyolefin-based resin, a polyester-based resin, and a polyurethane-based resin are preferred in terms of film-forming properties and flexibility, and an acrylic resin is particularly preferred in terms of flexibility and foamability. As the acrylic resin, a conventionally known polymer dissolved or dispersed in a solvent or water can be used. However, the base fabric of the present invention is preferably a resin dissolved or dispersed in water from the viewpoint of processability and environment. It is usually colored in order to enhance the value, and the coloring may be a coloring that is usually performed with a dye, and is not particularly limited.

A coloring agent may be added to the resin composition layer of the present invention. As such a coloring agent, a commonly used pigment-based coloring agent can be used, but the generation of a toxic gas containing chlorine and bromine elements at the time of incineration. From the viewpoint of prevention, those containing no chlorine or bromine element are preferred.

As described above, the fabric of the present invention needs to be subjected to a water repellent treatment from the viewpoint of antifouling properties. Examples of the water repellent agent include wax-based, metal complex-based, silicon-based, and fluorine-based agents. Can be used, but a fluorine-based water-repellent agent can be preferably used in terms of durability, high water repellency, oil repellency, and the like. For example, polypentadecafluorooctyl acrylate, polytrifluoro Ethyl acrylate, fluorine compounds such as tetrafluoroethylene-hexafluoropropylene can be used,
8 by spray method described in JIS L 1092 5.2
A score of 0 or more, preferably 90 or more is good. With such a water repellency, it becomes difficult to apply to rain, and therefore, the antifouling property can be improved.

The base fabric for a bag according to the present invention is JIS L109.
2 The water resistance measured by the hydrostatic method in the water resistance test A method (low pressure method) specified in 5.1 (1) is 500 mm.
It is preferably H ₂ O or more, more preferably,
1000mmH is ₂ O or more. Water resistance 500mmH ₂
If less than O, when used as a bag,
It is not preferable because water permeates from the base fabric surface.

In the method for manufacturing a luggage material according to the present invention, a water repellent treatment is carried out after laminating a thermoplastic resin on the back surface of the fiber cloth. Water repellent treatment of the resin layer is possible. As the water-repellent processing method, a known method can be employed, but from the viewpoint of easiness of processing, for example, water dispersion of polypentade or fluorooctyl acrylate, polytrifluoroethyl acrylate, tetrafluoroethylene-hexafluoropropylene or the like as a water-repellent agent. Dip processing by a mangle provided in a dip and lamination holding a processing liquid obtained by diluting the liquid with water is preferable.

[0020]

EXAMPLES The contents of the present invention will be described below in more detail with reference to examples, but the present invention is not limited to these examples.

The performance values of the luggage and the like obtained in the examples and comparative examples were measured by the following evaluation methods.

(Anti-fouling property) The base cloth for a bag is subjected to a heat treatment at 60 ° C. for 72 hours, taken out and allowed to cool, then, as a dirt substance, coffee is dropped, and immediately thereafter, the cloth is wiped off with a dry cloth. It was judged visually.

[0023]

[0024]

[0025] (Light Weight) Judgment Criteria: Weight Ratio of Thermoplastic Resin Layer to 100 Parts by Weight of Resin 40 to 80 Δ80 to 100 × 100 or more (Flexibility) The bending resilience was measured according to JIS L-1096.

[0026] (Film strength) A fir test was performed according to JIS K-6328.

Conditions: Load 1 kg x 1000 times

(Water repellency) A test was conducted according to the spray method specified in JIS L-1092.

[0029] Examples 1 to 3 and Comparative Examples 1 and 2 First, an Ox plain weave was woven using nylon 66 filaments composed of 460D-46F for warp and weft. Next, after refining and setting, it is dyed with a green acid dye using a Zicker dyeing machine, and the length / width = 54 /
The dyed and woven fabric had a weight of 36 g / in and a basis weight of 180 g / m ² . An unfoamed layer and a thermoplastic resin layer formed of a foamed layer on the back surface of the dyed woven fabric using an acrylate-based resin, and the total resin layer after drying has a thickness of 200 μm, which is almost the same as that of a vinyl chloride resin-coated product. , A base cloth for a bag was prepared, and the performance was evaluated. The unfoamed layer is a thickener in the acrylate resin emulsion,
After coating with a cross-linking agent, 120 ℃
After drying, heat treatment was performed at 170 ° C. The foamed layer is prepared by mixing a foaming agent, a pigment, a filler, a cross-linking agent, and a thickening agent with an acrylic acid ester resin emulsion, forming a foamed material having a foaming ratio of 3 times by mechanical foaming, and coating it.
After drying at 110 ° C., heat treatment was performed at 170 ° C. Then, after being immersed in an aqueous dispersion of a fluorine-based water / oil repellent, squeezed with a mangle and dried at 130 ° C.,
Heat treatment was performed at 170 ° C.

The processing conditions were such that the thickness of the resin layer after drying was set to about 200 μm, which is almost the same as that of the vinyl chloride resin-coated product.

On the other hand, as a comparative example,
The configuration of the thermoplastic resin layer composed of an unfoamed layer and a foamed layer is the same as that of the example, but the conditions of the expansion ratio of the foamed layer, the ratio of the unfoamed layer and the foamed layer, and the degree of water repellency of the thermoplastic resin layer were changed. A base fabric for a bag was prepared, and this was used as Comparative Examples 1 and 2.

In Comparative Example 3, a dyed and woven fabric processed in the same manner as in the example was subjected to dip processing and water repellency processing with a mangle by adjusting the concentration of the water repellent so that the water repellency was 60 points. After that, a vinyl chloride resin paste was coated and heat-treated at 170 ° C.

Table 1 summarizes the processing conditions of the luggage obtained in the above Examples and Comparative Examples, and Table 2 summarizes the effects obtained therefrom.

[0034]

[Table 1]

[Table 2] From the results shown in Tables 1 and 2, the products of the present invention of Examples 1 to 3 are more stain-resistant than the bag fabric of Comparative Example 3 which is a vinyl chloride resin-coated product which is a typical conventional bag. Despite being excellent in weight and light weight, the properties required for a bag such as water resistance, texture, and anti-eye-spacing properties were almost equal, and the properties were satisfactory in physical properties. That is, from the results shown in Table 1, it can be seen that the stain repellency can be improved by setting the water repellency to 80 points or more, and can be further improved by coating the surface with an unfoamed resin and smoothing it.

On the other hand, in the comparative example, it is found that the surface water repellency of the thermoplastic resin layer is 80 points or less, and the antifouling property is inferior. In Comparative Example 1, since the expansion ratio of the foamed layer was set to 7 times, the mechanical properties of the resin were reduced, and peeling occurred due to destruction of the resin layer in the fir test. In Comparative Example 2, the weight ratio of the unfoamed layer was However, since the amount is 50 parts by weight or more with respect to 100 parts by weight of the foam layer, the feel is hard and the light weight effect is extremely small. In the case of Comparative Example 3, since the resin layer is coated with a vinyl chloride resin, harmful gases and smoke containing halogen elements are generated at the time of combustion upon disposal, and a plasticizer is used. There is concern about the effects of hormones (endocrine disruptors).

[0036]

According to the bag fabric and the method of manufacturing the same according to the present invention, a fabric excellent in antifouling property can be obtained while maintaining the feeling of a conventional PVC-coated product. In addition, a backing fabric for a bag using a foamed layer as a laminate and using an acrylic resin as a thermoplastic resin is lightweight and easy to handle, does not generate toxic gases containing chlorine and bromine elements during incineration, and does not generate any residue. It is possible to obtain a product that does not have a risk of adverse effects on health due to agents and the like.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a bag fabric according to the present invention.

[Explanation of symbols]

 1: Base fabric for a bag 2: Fabric 3: Laminated body 4: Foamed thermoplastic resin layer (foamed layer) 5: Unfoamed thermoplastic resin layer (unfoamed layer)

 ──────────────────────────────────────────────────続 き Continuing on the front page F term (reference) 4F100 AK01B AK01C AK01D AK03B AK03C AK03D AK25B AK25C AK25D AK41B AK41C AK41D AK48A AK51BEJB DJA 012 JB06B JB16B JB16C JB16D JD02 JK13 JL00 JL03 JL06 JL10A YY00 YY00B YY00C YY00D

Claims (19)

[Claims] 1. A thermoplastic resin layer containing at least a thermoplastic resin is laminated on one surface of a fabric, and the surface of the thermoplastic resin layer has a water repellency according to JIS L 1092.
A base fabric for a bag, wherein a value measured based on a spray test specified in 5.2 is 80 points or more. 2. The base fabric for a bag according to claim 1, wherein the thermoplastic resin layer is a foamed thermoplastic resin layer containing air bubbles inside the layer. 3. The base fabric for a bag according to claim 1, wherein the thermoplastic resin layer is a laminate comprising the foamed thermoplastic resin layer and an unfoamed thermoplastic resin layer containing no air bubbles inside the layer. 4. The expansion ratio of the expanded thermoplastic resin layer is as follows:
The base fabric for bags according to claim 2 or 3, wherein the size is 1.5 to 5 times. 5. The base fabric for a bag according to claim 3, wherein said thermoplastic resin layer is a laminate comprising at least three layers including a foamed thermoplastic resin layer. 6. The base fabric for a bag according to claim 5, wherein the thermoplastic resin layer in contact with the cloth is an unfoamed thermoplastic resin layer. 7. The base fabric for a bag according to claim 5, wherein the thermoplastic resin layer has an unfoamed thermoplastic resin layer laminated on both sides of the foamed thermoplastic resin layer. 8. The bag base fabric according to claim 1, wherein the weight of the thermoplastic resin layer as the laminate is in a range of not more than the fabric weight. 9. The weight ratio of the foamed thermoplastic resin layer to the unfoamed thermoplastic resin layer is not more than 50 parts by weight based on 100 parts by weight of the foamed thermoplastic resin layer. The base fabric for a bag as described. 10. The thermoplastic resin is an acrylic resin,
The base fabric for a bag according to claim 1, wherein the base fabric is at least one of a urethane resin, a polyester resin, and an olefin resin, and the thermoplastic resin does not contain chlorine or bromine. 11. The luggage base fabric according to claim 1, wherein the fabric is colored. 12. The bag fabric according to claim 1, wherein the thermoplastic resin contains a coloring agent. 13. The fabric according to claim 1, wherein the fabric is water-repellent.
The base fabric for a bag as described. 14. The water repellency of the fabric surface is determined according to JIS L
1092. The value measured based on the spray test specified in 5.2 is 80 points or more.
Base cloth for bag 3. 15. The water pressure resistance measured by the hydrostatic pressure method in the water resistance test A method (low pressure method) specified in JIS L 1092 5.1 (1) is 500 mmH ₂ O or more. Base fabric for bags. 16. JIS L 1096 6.27.1.
Is 1 cc / cm ^{2 as} measured by the method A specified in
3 / sec or less. 17. A method for manufacturing a base fabric for a bag, comprising: laminating a thermoplastic resin on one side of a fabric; 18. The method according to claim 17, wherein the surface of the fabric is coated with a thermoplastic resin in the form of an emulsion dispersed in water. 19. A luggage, wherein the luggage base fabric according to any one of claims 1 to 16 is used such that the thermoplastic resin layer is on the back side.