SU901375A1 - Warp knit fabric from fiberglass materials - Google Patents

Abstract

In mfr. of a warp knitted material from glass fibre fabrics, partic. glass silk, a number of layers are bonded together using a sewing thread, to give a prod. for reinforcing plastic and elastic materials. The sewing thread is fixed in each layer at the point of entry and contoured exit before entering the next layer. The sewing thread used is selected from a grade which is available and/or modified with a surface structure and/or thermoplastic and/or adhesive so fusible cladding to give the layer bonding effect.

Description

() MAIN KNITTING GLASS KNITTED KNITTING

I

The invention relates to knitwear in indoor production and concerns the basics of a hosiery jersey made from fiberglass materials, especially from filament glass yarns, which are suitable for reinforcing plastics and elastomeric materials.

Basics fiberglass knitwear is a flat-shaped product in which fiberglass is interconnected or combined with other organic or inorganic materials by means of a loop-forming system of threads. Layered glass fiber filaments, fiberglass, glass fibers in non-oriented fiber layouts or in glass fiber fabrics are used as glass fiber materials.

Glass fiber filaments can be spun filaments, filaments of machines-MATERIALS

new yarn, twisted yarn or nitro rover. A base-like knit fabric finds application, for example, for heat and sound insulation, .. 5 for filtering purposes, as a base for the coating and a reinforcement material for plastics and elastomers.

The 10 Basics knit jersey, used as a reinforcing material for plastics and elastomeric materials, consists mainly of filament glass yarns arranged in one or more

layers. In the loop-forming system of threads, organic threads are used. Loop-forming threads in the basics of hosiery jersey do not have

20 originally of the reinforcement function, and serve exclusively for the binding of separate filament layers in flat-shaped products and are located mainly with a large length

25 stitches and a small number of threads ..

3

. The similar structure of the loop-forming system of the yarns is also due to the fact that in the manufacture of the basics of the hosiery knitwear of the fiberglass material layer, the stitch length and the consumption of the loop-forming yarns significantly affect the formation of the fabric. We strive to ensure that the core knitwear for this thread system has the lowest possible thread density and a large stitch length in order to achieve high productivity in the needle sewing machine and low consumption of the loop-forming system of threads.

The well-known basal knit yarn of fiberglass, especially of filament stems with a large pitch of loops (coarse needle pitch), has product-related defects, which act as a significant disadvantage both in the separation of the knitted fabric and in the unfolding of rasteni ani loops, due to mego, the separation of the filament layers is destroyed, and at the cut sites, the knitwear is partially or completely dissolved. Because of this, the well-known basal fiberglass jersey articles are not suitable for the method of manufacturing laminates with cut blanks.

An attempt is made to reduce the phenomenon of blooming using fiberglass base knit basics, which, due to the small length of glass and / or small needle pitch, has a dense structure of a loop-forming system of threads. In the manufacture of such knitwear, there are still disadvantages due to the increased consumption of the loop-forming yarn and the reduced productivity of the web formation process.

The purpose of the invention is to create the basics of fiberglass jersey, especially from filament glass yarns, with a small number of threads and a long glass of a loop-forming system of threads, which allows any cutting and separation processes without changing the structure of the layers of the product in the cut section.

In addition, the structure of loop-forming dich yarns, material, and also around 3775

the product-breaking layers of the yarns must be designed in such a way that the loop structure and

J is the most dependent binding action on the yarn layers of the entire product. The goal is achieved by the hardening of the loop-forming system, which fixes

0 the position of the loop-forming yarns and additionally the bonding layers of the yarns in the separation zones and cuts, the loop-forming system of the yarns consists of modified yarns,

5 filaments with a structured surface, made of thermoplastic and / or filaments, having gluing or alloying. properties, or from filaments with a bonding or fusing coating.

When using modified filaments or filaments with a structured surface in a loop-forming system of filaments, the filament has such surface properties that, thanks to the mutual anchoring or adhesion of these filaments, their structure and reinforcing effect is also preserved in the division or section zones.

When using thermoplastic and / or bonding or fusing yarns, or thermoplastic coated yarns, or yarns with an adhesive bonding or alloying coating, additional hardening of the loop-forming system of the yarns and thereby cutting stability is achieved by fusing and / or gluing. In this case, along with the hardening of the loop forming system of the threads, it can simultaneously glue together with layers of knitwear.

Additional hardening of the loop-forming system of the yarns allows the cutting of pieces of any configuration from the basics of fiberglass knitwear to the knit without the spreading of the product.

Claims (3)

The basics of fiberglass knit knit can be made with a large stitch length, with a low density of the loop-forming system of threads. As a consequence, products can be manufactured with high productivity with simultaneously low yarn consumption for a loop forming system. Example 1. For basic knitwear made of filament glass yarns with a surface weight of about 650 g / m, an ES 10 80 Tex teg is used as the material for the warp yarn (longitudinal thread). x 15 and as the weft yarn material (cross thread), the filament spinning strands of the ES 10 1bO fiberglass yarn are used to make the material of the loop-forming yarns consisting of textured polyamide silk of 15 tex. The interlacing of the loop-forming yarns occurs as a knit weave with a density of Yarns / dm and a stitch length of the loop-forming system of yarns. 18 tex., Consisting of polyvinyl chloride and polyamide fiber. In the places of their contact, looping of the thread is fastened together. Claims. 1. A bonnet of knitted fiberglass materials, consisting of one or several strands of strands connected by a loop-forming system, characterized in that the loop-forming system of the yarns is strengthened, fixing the position of the loop-forming yarns and additionally connecting the layers of strands in the zones of separation and section, The loop-forming system of the yarns uses modified yarns. 2. Knitwear according to claim 1, about tl and the fact that the loop-forming system of filaments consists of filaments structured on the surface. 3. Knitwear according to claim 1, which is based on the fact that the loop-forming system of yarns consists of thermoplastic and / or gluing or fusing yarns. Knitwear on PP. 1 and 2, in that the loop forming system of filaments consists of threads with a thermoplastic and / or adhesive or fusing coating. 5. Knitwear on PP. 1 - i, in that rtoneic and / or longitudinal yarns (weft yarns and / or warp yarns) consist of fiberglass, mainly from filament spinning glass yarns, roving made of glass yarn, machine glass yarn or twisted yarn, fiberglass cloth or fiberglass.