Bag neck sealer

Types of bag neck sealers

Using a bag neck sealer is the last step in the packing process, and it usually involves sealing the product in the bag and then applying heat to ensure it is appropriately sealed. Many retail products such as bread, bakery items, and other food items are sealed this way to ensure the product is not tampered with and to extend shelf life.

To get a better understanding of how to use bag neck sealers, it is essential to first consider the types of bag neck sealers available. They can be broken down into the following categories:

• Manual: Manual bag neck sealers require people to seal the bags with either a heat strip or jaw. This usually takes a bit of time, but it is helpful in situations where money is tight, and there is no need to seal thousands of bags daily. The process is very straightforward. People place the baggie of product under the sealing mechanism, pull down the handle or lever, and then wait a few seconds for the bag to be sealed.
• Impulse: Impulse bag neck sealers are activated when the neck of the bag is placed under the heating element. The heating element then applies heat for a few seconds and shuts off automatically. They are very energy efficient, and they heat up immediately after the bag is placed under the sealing element. This type of sealer is great for smaller bags and thicker plastic. Not all impulse bag neck sealers are created equal, though. Some have adjustable temperature controls, and others have indicator lights that show when the element is on or off.
• Constant heat: Constant heat bag neck sealers utilize the same heating element as impulse heat sealers. However, the constant heat sealers keep the heating element hot at all times. They are used to seal thicker plastic baggies, and operators must be cautious with them. Since the heating elements are always hot, there's a higher risk of damaging the product if the baggie is not the right material or if the person operating the sealer is inexperienced.
• Electromagnetic: Electromagnetic bag neck sealers can be handheld or used in automatic operations where the bags are sealed in 0.2 to 2 seconds. They can be used for various products but are mainly standard in the food industry. They can be air-operated, using compressed air to apply hot jaws to the bag neck, or belt type, which have friction belts in the middle that move at high speeds to pull the bag necks through the sealing area. Electromagnetic sealers are great if looking to seal thousands of bags of products in a short amount of time. However, they are an investment that may not be feasible for smaller operations.
• Impulse foot pedal: Impulse foot pedal bag neck sealers work kind of like manual bag neck sealers in that a person must manually place the product under the sealing area and push down the lever. However, the foot pedal aspect means that the operator will use their foot to push down on the pedal to initiate sealing. Sealing with foot pedal sealers can vary from small production runs to larger production lines.

Specifications and maintenance of bag neck sealers

• Seal width

  The seal width indicates how wide the sealing surface is. The neck sealer creates a seal at the bag's neck, where the width varies depending on the sealer model. Most bag neck sealer widths range from 8 to 12mm. A broad seal provides more assurance against leakage and a sturdy packaging solution.

• Max sealable film width

  The maximum sealable film width denotes the extent of the film or material that the bag neck sealer can accommodate for sealing. Most bag neck sealers allow for a maximum sealable width ranging from 300mm to 620mm. This specification is especially crucial for commercial contexts where larger volumes necessitate proportional packaging.

• Max speed

  The maximum speed of a bag neck sealer signifies the peak at which the machine operates. More than 18m/min speed is expected from most industrial bag neck sealers. This speed indicates the efficiency and productivity of sealing operations in various settings. It plays a vital role in determining turnaround times for sealing tasks. An industrial bag sealer with a higher maximum speed can streamline processes, reduce bottlenecks, and enhance overall operational efficiency, especially in high-volume production environments.

• Power

  Power refers to the electrical energy required to operate the machine effectively. In the context of industrial bag sealers, it includes the motor and heating elements that facilitate the sealing process. Industrial neck sealers typically operate at 400 to 600 watts. This power ensures optimal sealing performance, durability, and adaptability to different bag materials and thicknesses.

• Dimension

  The dimension of a bag neck sealer denotes the machine's physical proportions, including length, width, and height. The dimensions range from 1.2m to 1.8m (length), 0.4m to 0.7m (width), and 1.4m to 1.8m (height). These specifications determine the amount of space the machine occupies and its compatibility with existing production lines and workspace layouts.

• Weight

  The weight of a bag neck sealer indicates how heavy the machine is. Industrial neck sealer scales, on average, from 40 to 80kg. This information impacts factors such as portability, stability during operation, and the ease of installation within production environments.

Bag neck sealers are generally straightforward. Sealers have low moving parts, and most are manual. Regular training can keep maintenance to a minimum. Before commencing, check the sealer for any loose, damaged, or worn parts and replace them if necessary. Periodically lubricating parts that move helps improve height and performance and limit wear and tear. Carry out inspections regularly and keep the machine clean to avoid the build-up of sealing residue. Utilize sealing wax or sealing spray when necessary to improve the quality of the seal and the sealer's lifespan.

Scenarios in which bag neck sealers are used

Neck sealing of bags is commonly used in various industries to improve packaging, increase tamper resistance, and enhance shelf life. Here are some common scenarios where neck sealing can be applied:

• Food processing: In the food processing industry, bag neck sealers are used to seal food items such as fresh produce, meat, snacks, and bakery products to ensure food quality and safety.
• Pharmaceuticals: In the pharmaceutical industry, bag neck sealers are used to seal medical products, including drugs, sterile equipment, and medical devices, to maintain product integrity and comply with regulatory standards.
• Cosmetics and personal care: In the cosmetics and personal care industry, bag neck sealers are used to seal products such as lotions, shampoos, and cleaning products to prevent leaks, contamination, and tampering.
• Logistics and transportation: In the logistics and transportation industry, bag neck sealers are used to secure bags, crates, and containers during shipping to protect the contents from damage and theft.
• Retail and e-commerce: In the retail and e-commerce industry, bag neck sealers are used to package and seal products such as clothing, electronics, and household items for sale and delivery to customers.
• Chemical industry: In the chemical industry, bag neck sealers are used to seal chemicals, fertilizers, and raw materials to prevent leaks, spills, and contamination during handling and storage.
• Education and laboratory: In the education and laboratory sectors, bag neck sealers are used to seal samples, specimens, and lab equipment to preserve the integrity of the materials and ensure accurate results.

These are just a few examples of the many scenarios where bag neck sealers are used across different industries. The specific application may vary depending on the industry, product, and sealing requirements.

How to choose a bag neck sealer

When shopping for a bag neck sealer, it is important to consider options that offer more flexibility. This means that ideally, the selected machine packaging sealer should have adjustable sealing bars or necks to accommodate different bag sizes and seal shapes. Pay attention to its seal pressure and temperature controls, as they will ensure consistent and reliable sealing results across various products. It would be better to choose models with built-in safety features like emergency stop buttons and protective guards, to minimize the risk of accidents during operation.

It is also wise to select models that have quality sealing wires or bands that are durable and easy to replace. Before purchasing any bag neck sealer, it would be practical to research models with good customer reviews and ratings so that one is sure of their effectiveness. When buying in bulk for retail, always check the quantity discounts and pricing of each item. It might also be helpful to consult with the supplier’s customer service for any technical questions so as to get the best offer for sealing machines. Do a comparison of different suppliers before making the order so as to get an attractive offer and quality items.

Bag neck sealer FAQ

Q1: Are there any limitations on the kinds of necks bags are suitable for?

A1: Generally, the sealing machines are designed to handle a wide range of neck bags. However, they may not work well with excessively thick or delicate neck bags. It is also important to consider the bag's shape and size to ensure the sealing machines can effectively seal it.

Q2: Can a neck bag sealer accommodate multiple products at once?

A2: In most cases, the neck sealers are designed to seal a single neck bag at a time. However, depending on the specs of the neck sealing machine, some may have models that can accommodate multiple bags. In this case, the sealing limit will depend on the neck sealer's specifications, configuration, and capacity.

Q3: Can users adjust the sealing mechanism's pressure and temperature?

A3: Yes, many neck sealers allow users to customize the sealing parameters, including pressure and temperature. This is important as it ensures the sealer achieves the desired seal on various products and neck bag materials.