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Needles for tailoring of skin of skin of Groz-Becker buy in Chişinău
Buy Needles for tailoring of skin of skin of Groz-Becker
Needles for tailoring of skin of skin of Groz-Becker
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Needles for tailoring of skin of skin of Groz-Becker

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Moldova, Chişinău
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11 years on Allbiz
Technical characteristics
  • BrandGROZ-BECKERT
  • Country of manufactureGermany
Description

Needles for processing of skin of Groz-Beckert — beautiful seams in all scopes.

Processing of skin belongs to one of the oldest craft arts. Now, along with durability and durability, crucial importance has appearance of a seam which changes depending on fashion. Strong connection has to whenever possible also give to the final product attractive appearance. In order that production of products from skin was profitable, laying of a seam happens at a high speed of tailoring by modern cars.

Needs of customers include not only constant high quality of production, but also safety of production and the smallest idle time of cars. When developing a design and technology of a needle for Groz-Beckert skin first of all the following requirements played a role:

  • Low level of breakage of a needle;
  • Low level of the admission of a stitch;
  • Low level of a rupture of thread;
  • High quality of a cut (it is accurate also all layers);
  • Long service life of a needle for skin.

Production of needles Groz-Beckert for processing of products from skin with the cutting edge became result.

Depending on type of skin and its processing the producer recommends use of the following types of an edge of a needle.

Soft skin (for example for outerwear)
Recommendation: R, SD (LL, LR)
Average skin
Recommendation: all types of an edge depending on seam type.
Rough and thick skin
Recommendation: LR, LL, D, DH, DI

Appearance of a seam can also be changed by means of needles for the industrial sewing machines Groz-Beckert depending on requirements to design of finished product.

The following subordinate appearances of a seam are represented taking into account gas station of thread from left to right, and skin of average thickness.

Cuts skin under an inclination to the right by 45 degrees to the transport device. Depending on skin type in various degree the expressed seam inclination. Proshivny thread lies slightly from above. Places of a puncture are well visible. Average or short distances between separate stitches are possible
Application:
For production of the decorating quilted stitches on soft or medium-hard skin. Approaches almost all-type skin.
Examples: footwear, leather clothes, bags …
Appearance is similar to LR edge, with technically improved properties of a cut and type of a seam.
Application:
For production of the decorating quilted stitches on medium-hard and firm skin. Is suitable practically for any kind of skin.
Cuts skin under an inclination to the left by 45 degrees to the transport device. Equal appearance of a seam. Proshivny thread lies slightly from above. Places of a puncture are well visible. Average or short distances between separate stitches are possible.
Application:
For production of equal seams with the closed punctures. Is suitable practically for any kind of skin.
Examples: footwear, bags, covers …
Triangular, large cut through skin. The seam is located directly Proshivnaya thread lies slightly from above. Punctures are well visible. Averages or long distances between stitches.
Application:
For production of equal seams. Especially is suitable for thick, firm skin. Is suitable also for a proshiv of a cardboard.
Examples: Belts, suitcases, special footwear, plastic …
Triangular, the average size a cut through skin. The seam is located directly. Proshivny thread lies slightly from above. Punctures are rather well visible. Average or big pieces between separate stitches.
Application:
For production of equal seams. Especially is suitable for firm or medium-hard skin.
Examples: upholstered furniture, bags, footwear, and also materials of a covering, curtain, tent …
Round edge with the polished triangle on an edge tip. The seam is located directly. Proshivny thread lies slightly from above. Punctures are rather well visible. An ill-defined triangular cut through skin. Short or average distances between separate stitches.
Application:
For production of equal seams (slightly uneven). Especially is suitable for soft skin (skin for outerwear). For multilateral application.
Examples: footwear, haberdashery products, an embroidery on skin, and also a foil and materials with a covering …
Cuts skin across to material movement at an angle of 90 degrees. On thick and firm skin thus the decorating effect at the expense of the inclined seam is gained. Proshivny thread lies from above. Punctures are almost completely closed. Very short distances between separate stitches.
Application:
For production of seams with the expressed decorating effect and the tense seams.
Examples: Footwear, belts, upholstered furniture …
Appearance of a seam is similar to P edge
Application:
For production of seams with the expressed decorating effect, especially by two-needle cars for a left-side seam.
Examples: Footwear, upholstered furniture, bags …
Appearance of a seam is similar to P edge
Application:
For production of seams with the expressed decorative effect, especially by two-needle cars for a right-hand seam.
Examples: Footwear, upholstered furniture, bags …
Cuts skin along material transportation. The seam is located directly. Proshivny thread when tailoring certain types of skin is deeply involved inside. Punctures are located lengthways and rather well visible. Averages or long distances between separate stitches.
Application:
For production of seams enough deeply involved inside. Is suitable for soft and medium-hard skin.
Examples: Footwear, top leather clothes, upholstered furniture, bags, belts …
Appearance as at S edge, the cutting properties are increased by a tetrahedral form. Precisely executed punctures.
Application:
For production of seams enough deeply involved inside. Is suitable for medium-hard and firm skin.
Examples: suitcases, bags, special footwear …
Standard round edge. The edge is pressed through without the cutting effect. Mainly direct, slightly uneven appearance of a seam. Proshivny thread lies slightly from above. Averages or long distances between separate punctures.
Application:
For production of seams enough deeply involved inside. Is suitable for soft skin (the top leather clothes). For multilateral application.
Examples: Sports shoes, the top leather clothes, covers, and also a foil and materials with a covering …

Seam fortress in leather products

Thread

The more the quantity of stitches (quantity of punctures on centimeter), the more thread is stitched. Thereby, durability of a seam connected with thread increases with increase in quantity of stitches.

Skin

The more the quantity of stitches and thickness of a needle, the is more cut in skin.

At an identical thickness of a needle cut level and by that the level of durability depends including on the choice of an edge. P edge — gives the maximum tensile strength since the cut occurs across to a seam. The minimum tensile strength is given by an edge of S which cuts on a seam (standard strochechny sewing machines). Curves of all other types of an edge — are located between curves of an edge of P and S.

Seam

In practice the maximum durability of a seam is reached when at a rupture of a seam are at the same time torn both skin, and thread. On graphics this suppression of durability of thread on a seam with a skin durability on a gap depending on the choice of an edge.

To receive the maximum density of a seam at change of parameters: edges of a needle or thread it is necessary to adjust anew distance between stitches.

Tailoring of skin by two-needle cars

At one operation of work, by two-needle cars 2 parallel seams at the same time are stitched. Ideally the left and right seam have to look equally. Because of various mechanical principle of work of the left and right needle in most cases it is impossible to receive absolutely identical appearance of a seam.

Various reception of a loop

On the left needle for products from skin thread is passed from right to left. The formed loop is delayed against the direction of the movement of material.
On the right needle thread is passed against the direction of the movement of material.

On the right needle for processing of skin thread is passed from left to right. The formed loop is delayed in the direction of the movement of material.
On the right needle thread is passed against the direction of the movement of material.

Shift of a seam because of twisting

During the movement down of both needles there is a thread tension from an ear to an edge in the direction of tailoring.

At a Z-shaped type of torsion of thread there is in different degree an expressed round deviation.

When using a fillet of "CR" it is possible to reduce a round deviation by an edge of the needle located at the left a little.

R needle edge

When using an edge R left seam looks less inclined. Thread of a left-side seam has stronger twist.
Distinction of appearance of a seam depends on the choice of skin, thread and an edge of a needle of Groz-Beckert.

Thanks to application of a needle with the cutting edge appearance of a seam becomes more uniform. Most visually application of the following types of an edge looks:

The cutting needle edge for LR skin

The left and right lines of a seam have a uniform inclination to the left side. The inclination creates decorative effect with rather good foregrounds of punctures.

The cutting needle edge for leather products LL

At the use of this type of an edge at the expense of the corresponding cut in skin the formed small knot turns towards a seam. Thanks to it the equal seam with mostly closed places of punctures is formed.

Influence of skin on appearance of a seam

Skin has various longitudinal and cross structures. The hair channels and sweat glands located along material are the reason for that. Depending on this arrangement appearance of a seam can differ.

Application of needles for skin with the standard pushing edge (for example R) can result in significant difference in appearance of a seam, depending on the direction of a seam and type of skin.

For receiving a uniform type of a line it is necessary to use needles for skin with the cutting edge.

If the seam has to be equal in all directions, then the cutting edges of S, LL, D or DH are recommended.

If receiving a decorative seam on leather products with the inclined appearance of a line is required, then the cutting edges of LR, VR or P are recommended.

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Needles for tailoring of skin of skin of Groz-Becker
Needles for tailoring of skin of skin of Groz-Becker
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