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Tarpaulin tearing strength by the trouser tear method

1. Scope

This standard specifies a method of determining the tarpaulin tearing strength under specified conditions. It is applicable to products that, because of their flexibility, do not tear when clamped between the grips of a tensile testing machine. The method makes it possible to compare samples of different products provided their thickness does not differ by more than 10%.

2. Concept

Tear resistance

Ratio of the force with which a trapezoidal trouser-shaped specimen as shown in figure 1 resists tear, to the specimen thickness.

Figure 1: Template

Key

• Grip clamping marks
• Incision

3. Specimens

3.1 Sampling and specimen preparation

Specimens as shown in figure 1 shall be cut from the product to be tested. If possible, they shall be taken pap allel and transverse to the manufacturing direction (machine direction) of the film or sheeting so as to permit determination of the tear resistance in both directions as defined by the direction of the incision.

NOTE: If only one piece of the product is available and its manufacturing direction cannot be determined, specimens are to be taken in two directions normal to each other.

The cut directions shall be marked.

The use of a template as shown in figure 2, made of a cut-resistant material, will make it easier to cut out the specimen and make the incision with a knife or razor blade, and to make the grip clamping marks using a pencil, ballpoint pen or grease pencil.

Figure 2: Template

3.2 Number of specimens

A minimum of five specimens shall be tested. If specimens are to tested in both directions, at least five shall be taken for each direction. In arbitration cases, at least ten specimens in each direction are to be tested.

4. Apparatus

4.1 Tensile testing machine

Class 1, as in DIN EN ISO 7500-1, conforming to the requirements of DIN 51220 and fitted with a device for gripping the specimen at the marks (see figure 1).

4.2 Measuring device

For measuring the specimen thickness as in DIN 53370.

5. Procedure

Carry out the tear test in a 23/50 standard atmosphere as in DIN EN ISO 291.

NOTE: In many cases, additional tests performed at lower and higher temperatures are recommended. For this purpose, an environmental test chamber shall be used during testing, capable of maintaining the required temperature to within 0.5 °C

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Vinyl roller blind fabric combines polyester scrim with PVC film layers to create a flexible, reinforced shade material. Construction, surface finish, width and color are useful starting points when selecting fabric for a custom roller blind.

FOUR-PLY VINYL SHADE CONSTRUCTION:

Vinyl roller shade fabric is a four-ply material consisting of a loosely woven polyester scrim laminated between three sheets of polyvinyl film (PVC). During lamination, the material is also embossed to create its surface texture. PVC films are complemented by polyurethane films and coatings within the material range.

EMBOSSED FINISHES AND ROLL FORMATS:

Common embossings include matte, taffeta and polish. Roller blind fabrics usually have a matte finish for smoothness. Finished material is wound onto a cardboard core, with a standard core size of 3in.

Vinyl roller shade fabric widths range from 1.02m to 3.20m. Colors can be customized to customer requirements.

HOT AND COLD LAMINATED FABRICS:

Both hot- and cold-laminated roller shade fabrics are available. The material offers good flexibility, excellent tensile strength and tear strength, with durable constructions developed for different applications.

CUSTOM ROLLER BLIND FABRIC SUPPLY:

The collection includes retractable roller blind fabric, double roller blind zebra fabric, black sunscreen fabric and translucent sunscreen fabric. A wide choice of designs, styles and quality materials supports customized projects, with prompt handling of custom designs.

Duletai provides marketing, sales, planning, production, quality control, packing, warehousing and logistics services. The company focuses on quality, reliability, attentive customer service, continuous improvement and innovation, aiming to be a trusted, first-choice roller blind fabric supplier. Contact us for further product and customization information.

FAQ

What is inside four-ply vinyl roller blind fabric?

A loosely woven polyester scrim is laminated between three PVC film sheets, creating a four-ply reinforced construction.

Which finishes and widths are available?

Finishes include matte, taffeta and polish, with matte commonly used for roller blinds. Widths range from 1.02m to 3.20m, colors can be customized and the standard cardboard core is 3in.

What information helps with a roller shade fabric enquiry?

Provide the intended blind construction, required roll width, finish, color, quantity and preferred lamination process. Explore vinyl roller blind fabric or send your material requirements for a product discussion.

Views: 652

People who are in the market for good fabrics and are operating on a tight budget, rather than spending cash on used products, should consider contacting Haining Duletai New Material Co., Ltd, and shop for the newly presented fabrics. Those who have not considered something like this or are unaware of what is available in this company may be in for a surprise. This company manufactures and supplies different products that fill many niches such as automotive, agriculture, canopies, medical, military, etc. Of course, clients can still find ones designed for camping, swimming, marketing, and sports. They are the best products available in different materials, designs, sizes, shapes, and colors. And for clients who want personalized items, the company still offers customization services. Customers can order any products according to their specifications and needs. “We use state-of-the-art machinery and employ experienced professionals who design quality fabrics and accelerate the manufacturing process to meet the high demand from customers,” said Alex, CEO of the company.

GREEN SCREEN FABRIC:

Green screen fabric is an optimized solution for camera color keying. The green screen creates the stage for an enticing broadcast in seconds. This fabric is a new innovative product widely used by content creators and amateur photographers. Today, many people use social media, and this product is the most suitable for content creators. Makeup artists also use this product to record interviews and more. The fabrics often offer users a large area and full-body effects. Haining Duletai New Material Co., Ltd offers safe, durable, and wrinkle-free products that enable users to capture unique videos and images.

INFLATABLE GYM MATS:

The inflatable gym mat is widely used in sports fields. It provides a comfortable and soft floor on which athletes can train without harshness. For example, it is 5cm to 20cm thick and looks like a spring base. The color and size can be customized according to the customer’s requirements, while the weight generally depends on the materials and size. The surface of this product is smooth, very durable, and hardly twisting. Users are recommended to play with pressure.

INFLATABLE FLOATING PLATFORMS:

An inflatable floating platform is a compact size air-filled platform suitable for any outdoor recreational activity. It is generally designed using the latest technology material. Air in the vessel can be filled through multiple chambers using a High volume electric air pump. Similarly, performance is another excellent feature of this platform. It comes in different styles and sizes to suit every need. It can be comfortably used in any situation ranging from Yacht wash-downs, maintenance, and sports recreation. The platform is easy to maneuver since it has an anti-slip EVA deck and uber-toughness.

ENQUIRING ABOUT A CUSTOM PRODUCT:

Identify the finished application and provide the dimensions, color, quantity and intended use. For gym mats, specify the required thickness and training-space dimensions. For a floating platform, include the deck arrangement, chamber layout, inflation method and intended attachment points. For a green screen, provide the shooting-space dimensions and mounting requirements so the material enquiry addresses the actual setup.