Solve rational are called the most economical use of the useful area of fabric arriving at the sewing factory for the manufacture of major (planned) products. 

The essence of rational cutting is to pre-calculate pieces of fabric in different length of decking or frame in single deck, combination that eliminate or sharply reduce the irrational remnants of fabric. Therefore, estimation of tissue increases the percentage of their use.

Remnants from pieces of fabric can be rational and irrational. 

 Rational call the remains, suitable for cutting articles manufactured by the factory. 

 Irrational remnants from pieces of call such that the length in the manufacture of one product. Thus, the part of the tissues in the form of irrational residue remains unused at the factory for a planned production, which negatively affects the economy of the enterprise. 

PREPARATORY WORK FOR THE CALCULATION OF TISSUE

In the preparatory workshop in accordance with the daily task of the release of goods from the styles and timetable of cutting complement the floorings, in which select pieces of fabrics, mostly of the same article, pattern, color and width. A large number of widths of fabric, various colors (in the manufacture of women's and children's products) can lead to reducing the height of the decks. To increase the height of the deck complement of a garment factory in single deck cloth of different colors.

The amount of fabric for flooring depend on its thickness and width, the length of the spreading tables, as well as the planned release of products.

All pieces of tissue are picked in batch, record, statement, specifying the order number, name and article of fabric, pattern, group, fabric, width, number and length of pieces. In the end, indicate total square footage and total number of pieces. Write statements in two copies: one to account for fabric shop training, one for the cutting room. To statement attach samples of fabric of all colors and patterns and passport pieces. Confectioner indicates on the statement model number.It is recommended that the estimator flooring pre-picked in the party rational pieces of cloth, i.e. similar in length and equal in width.

In the measurement of tissue discharged a passport (card) pieces in two copies, the first one glued the tissue sample, the second invest in a piece of cloth. The first instance of a cell in a special box for the types of products and articles with ascending numbers.

The task of the estimator of flooring is to calculate the pieces of cloth with the maximum use of combined layouts when nastilanie "face" given the scale size-Rostov, the elimination of unsustainable balances and receive decks the maximum height. Each piece of fabric and if the piece several cuts, each cut, matched flooring, calculate strictly according to the established norms.

For quick and easy use consumption tissue is recommended to make a special card index of the current consumption of the tissue. To speed up calculation of pieces of fabric calculators use a single design table, developed TSNIISHP. 

Mechanized calculation of tissue for flooring based on the use of electronic computers EMRT-2, which performs the calculation of the tissue by the method of directed enumeration of the different combinations of cloths.

On the machine, each piece can be calculated simultaneously on the three combined main deck and one additional (one set of curves). 

The use of electronic computer type Razdan-2 can simultaneously count up to 100 pieces of fabric in 14 different lengths of decking and is a high-performance concentrate for the preparatory-cutting production sewing associations. The order of selection of lining fabric across the width of the piece and calculation of its use are similar to these operations for fabrics at the top of the garment. 

THE CALCULATION OF TISSUE FOR DECKING

There are various ways of calculation of tissue. 

 The calculation for a given piece of flooring provides for selection and calculation of pieces for flooring of a certain length and height (number of layers of fabric). With this method the rational residues of laying out return to the warehouse and intended for further use; method used for cutting a limited number of tables and a small length. 

 Calculation of piece to end provides a set of different lengths of frames with the use of tissue without rest or with minimal rest from the piece. In this method there is no need to keep a rational residues, but reduced turnover (utilization) cutting tables, resulting in need lengthening. The method contains several variants of the calculation of the decks: speed, multistage and hybrid.

Step decking is mainly used for cotton fabrics and butt. All data on Abimelech (the framework) has been cutting cards sequentially as you increase the height of the deck, and not length almalki. 

The calculation is conducted as follows: sum up the length of a certain number, for example three, obmalloc; a piece of cloth laid over the entire length, the remainder is transferred to two or one frame depending on its length and so on, until deck the desired height. This produces a flooring that consists of several frames of different heights, i.e. speed.

Multi-decks are used for woolen fabrics. At the same time expect a piece of cloth for several independent sections of different length frames and the height of the flooring. In this case, the flooring can be carried out at different tables.

Composite decking used at the same time for the options outlined above; in separate sections allowed nastilanie face down. A piece of fabric with defects count as pieces with conditional sections. There are cases of calculation of local tissue defects, provided these defects in magically attacks or non-critical small parts, which can then be separately cut out.

When nastilanie tissues with local defects follow, where does Vice. If the defect is not positioned on attacks or minor details, and hits the important parts, such cloths are removed from the deck and cut out separately (these paintings are called "red"). When calculating the pieces avoid small residues up to 15 cm (wool fabric) and 10 cm (for other tissues), as such residues are not taken into account and included in the actual fabric consumption, i.e., increase the loss.

The results of the calculation of the decks entered in the card (table. 32) to enter all the pieces, indicating the cuts between defects the combination of size-Rostov under; the rate of flow of the fabric.

To expedite the laying out of the fabric and increasing the height of the flooring estimator decomposes the piece into a single partition or (if possible) - parts of the second, third partition to make full use of the piece. Total data from payment cards payroll officer contributes to the cutting chart indicating the numbers of pieces in the outfit. 

To the tissues of the top picks confectioner lining, and applied materials. Lining expect the same as the top fabric, but in compliance with number of products and Rostov-top.

Fabric top, it is advisable to count on abelcam made to prevent the deviation of the actual data from the calculated obmalloc. In this case, jobs Obelisco set in the preparatory workshop. 

Sent nutritarian transport in the cutting Department, picked orders (party) of the tissue with the calculations recorded in the special register, which indicate the order number, the article number of fabric yardage. Commissioning and acceptance of fabrics are produced by responsible persons.