JPH01239104A - Safety gloves - Google Patents

Abstract

PURPOSE:To obtain the subject product having high cutting resistance, exhibiting remarkable safety and durability and useful for protecting the hand of an operator in meat-chopping and glass manufacturing and blowing operations, etc., by using a specific spun yarn together with a metal wire as a core material. CONSTITUTION:A core material is formed from a metal wire and a high-tenacity fiber consisting of a spun yarn having a tenacity of >=2.7g/d at an elongation of 5% and composed of fiber having a melting point or decomposition point of >=300 deg.C and single filament percentage crimp of <=1%. The core material is covered with a synthetic fiber and the obtained sheath-core composite yarn is knit to obtain the objective product. The metal wire is preferably a flexible stainless steel wire having a diameter of 0.02-0.15mm. The fineness of the spun yarn used as the high-tenacity fiber is preferably 100-2,000 denier from the viewpoint of knittability. The covering synthetic fiber is preferably polyamide filament having a total fineness of 50-1,000 denier.

Description

[Detailed Description of the Invention] <Industrial Application Field> This invention is applicable to, for example, meat processing operations using sharp knives;
This invention relates to safety gloves used to protect the hands of workers during dangerous operations such as glass manufacturing operations that involve handling glass, etc., and sheet metal forming operations that involve handling the edges of sheet metal.

<Prior art> Such safety gloves initially started out as gloves in which only the wire was braided, but later they were developed to be highly strong and lightweight.

Many gloves with improved workability have been proposed, such as gloves made from a composite yarn consisting of a core and an outer jacket.
The core is made of a flexible wire and an aramid core, the aramid core is made of aramid fiber strands, the wire and the aramid core are arranged in close contact with each other, and the outer sheath is a pair of aramid outer sheaths. The pair of aramid sheaths each consist of a strand of aramid JJJ I, each of the aramid sheaths being oriented around the core in mutually opposite directions /υ
"Protective gloves characterized by being wrapped in a shape" (
(Japanese Patent Publication No. 59-28641) or [The core has flexibility and the diameter is 0.025 to 0.
．． The core is made of a 10 M wire wire and a thread made of high strength fibers having a strength of 20 y/d or more, and the sheath part contains fibers with a lower strength than the high strength fibers. Is it a yarn that is spirally wound around a part of the yarn, or is a yarn that is made by using the low-strength fiber yarn and a high-strength fiber that has a strength of 209/d or more? υIt is characterized by being made by pulling or plating a core-sheath composite yarn in which several types of yarns are wound spirally around the core, and a synthetic fiber yarn or/and a natural fiber yarn. "Protective gloves to protect" (Jitsukaiaki (i2-1579)
No. 15), etc. are disclosed.

<Purpose of the invention> However, meat processing work and glass manufacturing processing work.

Sheet metal forming operations are rough, and the impact force applied to the gloves is extremely large.The reality is that even the best protective gloves become damaged and become unusable in a relatively short period of time. In view of these circumstances, the inventors of the present invention have studied and developed the present invention for the purpose of developing gloves that are more durable and last longer.

<Structure of the Invention> That is, the present invention provides a glove in which the core is made of high-strength fiber and wire, and the core is made of braided core-sheath composite yarn in which the core is covered with synthetic fiber, in which the high-strength U and navy blue have a melting point or decomposition temperature. "Safety gloves characterized by being made of spun yarn having a point of 300°C or higher and a crimp degree of single fibers of 1% or less, and a strength of 2.79/d or more at an elongation of 5%." .

The fibers having a melting point or decomposition point of 300°C or higher are polyvara phenylene terephthalamide fibers.

In addition to fully aromatic polyamide fibers such as polymethaphanylene isophthalamide fibers, polyoxadiazole fibers,
Polyamide hydrazide fiber, polyamide imide 5 units
, polyimide fiber, polybenzimidazole m navy blue, polybenzimidazole m navy blue, polybenzimidazole phenanthroline fiber, polyether fiber, poly(nalphide fiber), polyketone fiber, polysulfone fiber, polyazole IJA miscellaneous, etc.

The melting point or decomposition point is 300°C or higher and the degree of crimp of the jI group is 1.
% or less of fiber, and the strength at 5% elongation is 2.7
Spun yarn with a diameter of 97d or more has a melting point or decomposition point of 300
More than ℃! It can be obtained by cutting one or two substantially uncrimped fibers, and then subjecting the fibers to a conjugation treatment without continuously imparting crimps to obtain a spun yarn (Japanese Patent Application Laid-open No. 58-81637).

The wire has a diameter of 0.02 to 0.15. Use flexible stainless steel wire A7 mm. Use of spun yarn in the range of 100 to 2000 denier is important for knitting performance, workability of gloves, etc.'C
preferable.

The synthetic fiber used to cover the core material is not particularly limited, but it is preferably one that has high frictional strength and does not generate fluff.

For example, a polyamide length t is used with a fineness of 50 to 100 deniers. The core material is a yarn mixed with high-strength fibers and other metals, and although the mixed fibers may be twisted together, it is preferable to have them aligned in terms of durability. The synthetic fibers may be coated on the core material by any commonly used method; for example, the synthetic fibers are wound spirally around the core material in two layers, upper and lower. A conventional method is used to braid the core-sheath composite yarn into a glove.

<Effects of the invention> A spinning system is used that is made of C single fibers with a melting point or decomposition point of 300'C or more and a shrinkage of 1% or less, and has a strength of 2.7 g/d or more at an elongation of 5%. Since the ends of the rigid fibers protrude around the spun yarn, slippage between the spun yarns or between the spun yarns and the core material and the covering yarn is prevented, and this improves the durability of the core material and the covering yarn. This improves stability.As a result, the strength utilization rate of the high-strength fibers is improved, leading to the durability of the gloves during work.The resulting gloves are extremely cut resistant and offer a high degree of safety and durability. have

<Example> The method for manufacturing safety gloves of the present invention will be described below with reference to Examples. Cut resistance and puncture resistance in Examples.

Durability etc. were evaluated by the following method.

Cutting Resistance As shown in FIG. 1, the sample 1 is tilted at 45° and the circular cutter 2 is pressed against it from above.

Puncture Resistance As shown in FIG. 2, the sample 1 is placed in a horizontal state and punctured from above with a puncture tool 2 having a sharp tip 9, and the stress at that time is determined by a stress-strain meter 3.

Durability JIS-L-1090-0, 17, 3-C7 Evaluation was made using a taper [wear tester].

Example 1 3.4' Diaminodiphenyl ether copolymerized polyparaphenylene terephthalamide fiber (manufactured by Teijin Co., Ltd.).

A 3000 denier 2000 filament non-crimped tow (0.1% oil adhesion, 1.6% moisture adhesion) made of Technora ■) was cut with a tension cutting ratio of 20 mm between a pair of rollers at an interval of 750 mIn. Then, the spun yarn was continuously subjected to interlacing treatment under the following conditions.

Place I! J! speed
200771 /min pressure pneumatic pressure
5 Kg/ctA overfeed rate 2% The physical properties of the obtained spun yarn were as follows.

Average fiber length 290#
Breaking strength 11.0y
/d breaking elongation
Strength at 13% 5% elongation: 29 g/d Three spun yarns (number 10, 63) (equivalent to 1500 denier) and two flexible stainless steel wires were aligned to form a core material, and a core material of 420 denier Nylon fibers were wound twice on the upper and lower sides to obtain 1 q of core-sheath composite yarn.

A safety glove was knitted using a 5-gauge knitting machine by aligning the two core-sheath composite yarns. Table 1 shows the performance evaluation results of the gloves.

Comparative Example 1 Gloves were obtained in the same manner as in Example 1 except that Technora ■ filament 1500 denier was used instead of Technora ■ spun yarn. The evaluation results are shown in Table 1.

Table 1

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the cut resistance measuring device, and FIG. 2 is a side sectional view of the puncture resistance measuring device. Patent applicant Teijin Ltd. No. 1
Figure 2

Claims (1)

[Claims] In gloves made of braided core-sheath composite yarn in which the core material is made of high-strength fibers and wire, and the core material is covered with synthetic fibers, the high-strength fibers have a melting point or decomposition point of 300°C or higher and the single fibers are crimped. 1. A safety glove characterized by being made of a spun yarn made of fibers having an elongation of 1% or less and having a strength of 2.7 g/d or more at an elongation of 5%.