JPS5937901A - Production of working footwear - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing work footwear that is worn when walking on a floor coated with an adhesive or adhesive.

Recently, in waterproofing construction and other construction work, there is a lot of work that involves applying adhesives with strong adhesion to floor surfaces. In order to obtain footwear suitable for this purpose, it is necessary to make the bottom forming part of the footwear from silicone rubber or fluorine resin, etc., which have non-adhesive properties against sticky substances. There was a problem that adhesion was almost impossible due to its original properties.

As an invention designed to solve this problem, Japanese Patent Application Laid-Open No. 57-227
No. 04 is mentioned. In this invention, FEL) X is a base material made of long fiber raised woven fabric impregnated with liquid rubber or resin, one side of which is used as a footwear sole forming layer, and one side of which is used as a joint to the footwear body. However, it is difficult to work, resulting in low manufacturing efficiency and high costs, and also has the disadvantage of not being able to produce uniform products in terms of quality and quality.

゛The invention of the present application was completed after conducting research from these viewpoints, and a shoe-shaped uraki is inserted into a shoe mold, and a paste-like material that exhibits non-adhesion to the adhesive surface after solidification is added to the bottom of the shoe mold. Apply unsolidified rubber or resin in a tingling manner, let it soak in, and heat to form a semi-cured film. On top of the semi-cured film, apply the same type of unsolidified rubber or resin to a thickness not exceeding 10wn and heat L7. This is a method for manufacturing work footwear having a rubber or resin sole that exhibits non-adhesive properties to an adhesive surface after solidification, the method comprising repeating the process of curing the rubber or resin material to a semi-cured state an arbitrary number of times.

In the present invention, the lining fabric of the shoe geta is inserted into the shoe mold, and the stitched lining fabric is preferably a well-known tissue fabric such as stockinette or tricot. Any constituent fibers may be used. This knitted or woven fabric or the like is knitted into clogs in advance, or cut and sewn into a predetermined shoe shape to form the shoe-like lining fabric of the present invention.

In the present invention, the paste-like unsolidified rubber or resin that exhibits non-adhesion to the adhesive surface after solidification includes, for example, silicone rubber, fluorine-based comb, fluorine-based resin, etc.
These rubbers and resins are mixed with an appropriate curing agent and used in the form of a paste.

The viscosity of the paste is 50,000 to 200. O
A range of O0cp (25°C) is preferable. Viscosity is 200,
If it exceeds 50,000 ap, there will be a drawback that the coating will not be sufficiently entangled, and the coating film will be difficult to layer evenly, resulting in unevenness. If it is less than 50,000 ap, it will be difficult to form the desired thickness. Therefore, the problem arises that it is difficult to reach the destination.

In the present invention, first, a paste-like unsolidified rubber or resin is applied to the bottom surface of the lining cloth, and is soaked in and heated to form a semi-cured film. It is desirable that the amount of the paste applied is at least enough to uniformly wet the entire bottom surface of the undersock. The heating conditions for heating the applied paste are not particularly limited, but practically the conditions can be selectively determined as appropriate within the range of 40°C to 100°C. It is important to limit the degree of heating to a point where the paste forms a semi-cured film. If curing is completed at this point, care must be taken because adhesion between the layers will not be achieved when the next applied uncured film is heated and cured.

In the present invention, uncured rubber or resin of the same type is coated on L of the semi-cured film described above to a thickness of 5 mm -1, Owvn and heated to a semi-cured state. The term "rubber or resin" means that the same paste as described above may be used, or a paste prepared with a slightly different formulation may be used. At this time, the thickness of the coating is 1. If it exceeds orrrIn, the coating film will sag and the thickness will become uneven, so the thickness should be reduced to 1. It is necessary to do this within a range that does not exceed Own. 0.5 indulgence ~ 0. , 8 van thickness.

In the present invention, the above-described coating and curing operations are repeated an arbitrary number of times. Here, the term "arbitrary number of times" means that the number of times can be freely selected depending on the thickness of the sole of the desired footwear. For general practical purposes, about 4 to 5 times is preferable.

The present invention has been described in detail above. Conventionally, it has been known to obtain footwear by using a sock lining as a core body and coating and impregnating it with a paste-like rubber.
Rubber, resin, etc. have good adhesive properties, so
The oozing of such paste onto the inner surface of the shoe mold will result in adhesion to the shoe mold, making it difficult to remove it later, and will also stain the surface of the shoe mold, significantly slowing down the work. Therefore, it is not possible to lower the viscosity of the paste, and if the viscosity is increased, it will be difficult for the resulting coating film to form a uniform thickness. Manufacturing footwear was next to impossible. The present invention focuses on the special properties of paste-like unsolidified rubber or resin that exhibits non-adhesive properties after solidification, and as a result of research and prototype production, it has been found that penetration of a low-viscosity paste into the inner surface of the sock is effective against old adhesion to the shoe mold. The present invention was completed by unexpectedly discovering that the paste does not cause any staining phenomenon and that recoating is effective when the paste is in a semi-cured state.

As described above, when using the footwear manufacturing method of the present invention, not only can the desired work footwear be obtained extremely easily, but also,
The obtained product is lightweight, homogeneous, and of satisfactory quality, which is a great result.

Examples of the present invention will be described below.

〔Example〕

TSE 3402 RTV 100
g (Silicone rubber manufactured by Toshiba ■) TSB 3402 RTV (B) j
O, g (hardening agent for silicone rubber manufactured by Toshiba ■) The above two components are mixed to form a paste. The curing speed of this paste was 12 hours at 20°C and 20 minutes at 70°C. Also, the viscosity is 150,000 cp (25℃
), stockinette (cotton/
Apply the above paste to the bottom of socks made of polyester blend (commercially available) with a brush (coating amount: 60 gr/foot;
25.0 size) and heated in an oven at 50°C for 5 minutes to form a semi-cured film, then apply the same paste on top of it.
．． 5 wll-o, apply evenly to the thickness of 8111111 (coating amount 40gr/foot; 25.0 size) foot; 2S,
O size) was coated uniformly, and the oven temperature was further raised to 70° C. and heated for 5 minutes. Add the same paste again for 0.5 B
~0.8 wn thickness (application [130gr/foot H2
5, o size) was applied uniformly and heated at 75° C. for 15 minutes to complete curing, thereby obtaining light work footwear that was integrated with the socks.

−1 or more

Claims (1)

[Claims] A shoe-shaped lining fabric is inserted into a shoe mold, and a paste-like uncured rubber or resin that exhibits non-adhesive properties to the adhesive surface is applied to the bottom surface of the shoe mold, which is soaked in and heated to form a semi-cured film. After assimilation, the process of applying the same type of uncured rubber or resin on the semi-cured film to a thickness not exceeding 1.0+a and heating it to a semi-cured state is repeated an arbitrary number of times. A method for manufacturing work footwear having a rubber or resin sole that exhibits non-adhesion to adhesive surfaces.