Despite the abundance of finished conservation on the shelves of shops, the housewives still find time and desire to prepare home salads, pickles, jams and compotes. The process of rolling cans with tomatoes and crispy cucumbers, which our grandmothers practiced, did not change significantly. However, under the influence of technological progress, this activity has become much simpler.
The main thing in preparing homemade blanks is the tightness, which allows you to store foods for a long time. A few dozen years ago for the rolling of cans began to use special winding machines. The technology did not differ in simplicity: first the can was sterilized , then the machine was mounted on it, and tightly, but very gently pressing, rotating the handle, periodically pressing the roller. For owners with a lot of experience, a lot of time was not required for this, and beginners had to face difficulties, sometimes breaking glass jars.
Types of grinding machines
Today, the variety of kitchen helpers is so great that it is not difficult to choose a convenient dressing machine. If in the past these devices were made of rigid plastic, then today practical and lightweight polypropylene is used. Steel is now covered with a permanent galvanic coating, which increases the life of the press and its reliability.
Initially, a conventional manual key replaced a semi-automatic machine. There are no significant differences in it, but it's not necessary to tighten the video. One turn is enough to secure the lid on the bank. A few more turns of the handle around the axis - and the capacity is finally clogged. The process of rolling was simplified, but the landlady still had to spend a few minutes twisting the device around the cans, while taking special care. Bank after all at any time could burst, and its contents of high temperature - splash out.
It is another matter for automatic canning machines for canning, which cope with blockage of cans in one motion. Thanks to the original design, it is very easy to use such devices. Automatic sealing machine consists of a system of levers that interact with a rigid spring. To clog the jar, there will be enough effort, equal to only 2.8 kilograms.
How the automatic sealing key works
Before using the automatic machine, it is necessary to sterilize the tin lids. Then, the lid is put on the jar, the crocheting key is placed on top and pressed simultaneously on the handles. Thanks to the spring located in the body of the machine, the edges of the lid are crimped around the neck, preventing the ingress of air. Special design of rigid
You do not have to worry about the chips and cracks appearing on the bank from excessive efforts, since the design of the automatic sealing device includes a stopper. It serves as a restrictor and does not allow the tin lid to close more tightly than is required for hermetically sealing the container.
If vacuum industrial electric winding machines are not cheap, then it is not difficult to buy a key-machine for a household due to its democratic price. With this kitchen assistant, at any time of the year, you will have delicious, healthy and natural products on the table, the process of rolling cans will be much simpler.