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An evidence bag with tape comes in different configurations. Each type of bag serves a unique need depending on the situation at hand.
Traditional Seal Bags
These are widely used in crime scenes. Traditional seal bags are made of transparent plastic. They ensure visibility to prevent tampering with vital evidence. These bags have adhesive seals that stick when pressed. Some may also have a zip-lock feature for added security. This type of bag is preferred for holding dry items. They include paper documents, small clothing articles, or non-electronic exposing items.
Mylar Bags
Many in the forensic industry value Mylar bags due to their sturdiness. These bags are tear-resistant and offer a higher degree of protection. They are compared to regular plastic bags. Mylar bags come with tamper-evident seals. These seals change color or show a message if someone tries to open the bag. Such a feature makes them ideal for critical pieces of evidence that need quick protection from environmental factors.
Evidence Bags with Heat Seal
Officers use heat seal bags to protect evidence that requires airtight storage. The primary function of these bags is to keep the contents dry, safe from contamination, and free from exposure to the elements. Examples are substances, electronics, and anything delicate. Such items may be damaged by water or air exposure.
Plastic Sealable Evidence Bags
These are common in cases requiring temporary storage of evidence waiting for collection. They are available in different dimensions and serve well for various types of evidence. Most plastic sealable bags have a write-on panel for easy identification of the items inside the bag. Effective seals ensure the items do not easily fall out or be accessed without breaking the seal.
Biohazard Evidence Bags
These bags have identifiable danger symbols printed on them. These bags are suitable for evidence that has been exposed to blood or other body fluids. The materials used to make these bags are thicker than normal evidence bags. This feature helps reduce the chances of the bag tearing and exposing personnel to dangerous materials. Biohazard bags also have heat seals that ensure the contents remain contained.
The design of an evidence bag with tape is influenced by various practical aspects. These aspects include the size of the items, the kind of items, and the necessity to avoid contamination.
Materials
Most evidence bags that need sealing are produced from durable, high-quality plastic. It is known as polyethylene or polypropylene. They are flexible and offer water resistance. These two qualities make them suitable for safeguarding items from various elements.
The inner portion of a heat-sealable evidence bag consists of a unique film blend that blends together on exposure to heat. Such a fusion forms an airtight and watertight enclosure crucial for preserving perishables. Tamper-evident bags feature adhesive that leaves a visible mark once the bag is accessed.
Closure Mechanisms
The most prominent feature of an evidence bag is its closure system. Officers frequently use adhesive seals in the bags. These are handy because they stick easily when pressed together. Ziplock bags are also there. They offer a flexible seal that can be opened and closed numerous times. Then, there are heat seals. These are suitable for evidence requiring airtight storage.
Size and Format
To serve different needs, evidence bags come in various sizes. Smaller bags may be used for containing jewelry or drugs. On the other hand, larger bags can hold articles of clothing or bigger items such as weapons or electronics.
Most bags have a rectangular shape. This makes them easier to stack or store. They can also be compact during transport. Nonetheless, some specialized bags have unique shapes. For instance, bags meant for holding weaponry may have an elongated design.
Accessibility and Usability
Bags for storing evidence are designed with officers' needs in mind. Most of the bags have write-on sections. Officers can easily record pertinent details such as case numbers, contents, and dates using them. Bags are extra fitted with a damaged-free inner lining. This feature ensures that the evidence is undisturbed at any point. It also permits easy removal of the items when required.
An evidence bag seal is used in multiple situations. Each scenario utilizes different features of the bag depending on how urgent it is and what is required.
Crime Scene Investigation
One of the most common uses of evidence tape bags is during crime scene investigations. Officers protecting the integrity of physical evidence from contamination use these bags. The bags are typically employed to store items such as firearms, fingerprints, or any tangible object. In this case, evidence bags with adhesive seals are frequently used. They not only offer tamper proof but are also easy to seal the collected items.
Drug Seizures
Laws enforcement officers use evidence bags in most of the cases involving drug seizures. Drugs are perishable goods that must be sealed in airtight containers to ensure they maintain their original state. That is why either heat seal bags or Mylar bags are ideal for this situation. Besides securing the drugs, these bags also keep the original contents and scents intact. Hence, they provide crucial details during laboratory analysis or court processes.
Traffic Stops
During traffic checks, officers may come across vehicles containing suspect items. Such items may be paraphernalia or stolen properties. In this case, the officers will use evidence bags to secure the items for further investigation. For this situation, plastic sealable evidence bags are practical. They are lightweight and easy to use. Furthermore, they can be easily transported or stored within a vehicle.
Forensic Analysis
In crime laboratories, forensic analysts require evidence bags that maintain the integrity of evidence through various testing procedures. Items such as biological samples and electronics need specialized bags for forensic analysis. These include heat seal bags and bio-hazard bags to prevent exposure to harmful elements. Such bags are crucial in crime labs as they preserve the evidence and ensure analyst safety.
Securing Valuable Items
Apart from criminal investigations, evidence bags may also be used to secure valuable items during events. These items can be as valuable as artifacts, or a digital device. When used in securing such items, Irar eof bags protect them from theft or tampering. Their transparent nature provides easy visual verification of the contents while maintaining an unobtrusive presence.
Knowing the right size and performing maintenance on the evidence bags sealed with tape is integral for adequate evidence protection.
Specifications
Various types of evidence bags come in multiple dimensions. Ranging from 6 by 9 inches to 24 by 36 inches. Typical thicknesses are from 2 to 4 mils. Users choose among these various sizes depending on the types of evidence they expect to handle. For instance, smaller bags are ideal for collecting personal effects or smaller items like tools or documents. Usually, officers choose larger bags to store clothing evidence or other bigger items.
The sealer options available include adhesive seals, heat seals, and zipper openings. Tamper-evident features are incorporated into most options. For example, adhesive seals have patterns that are clearly visible when the bag is accessed.
Maintenance
It is constantly important to keep evidence bags in the right condition for them to function adequately. This maintenance is achieved by adhering to the following recommendations:
Store the bags in a space free from humidity. One of the main features of these evidence bags is their versatility. Evidence bags are often stored inside archival boxes or filing cabinets to keep them from dust or other debris.
Avoid exposing the bags to direct sunlight. Such exposure can degrade the plastic over time. Officers work with the bags primarily indoors or in the shade. This practice goes a long way in preserving the quality of the bags.
Check the bags regularly for any signs of wear or damage. Bags that are compromised in one way or the other do not perform their duties as they should. So, replacing such compromised bags ensures optimal performance.
Before using the bags, it is advisable to clean the area around the closure. This simple act prevents the transfer of any contaminants from one surface to another. In turn, it ensures that the integrity of the evidence is maintained.
They are used to securely store and protect evidence collected from crime scenes while maintaining the chain of custody and preventing tampering. They are especially useful in forensic investigations where preserving the integrity of evidence is crucial.
Most evidence bags are made from durable, transparent plastic, specifically polyethylene or polypropylene. These materials are resistant to tearing and environmental damage, ensuring that the evidence remains protected. Evidence bags with heat seals use special films that fuse together under heat to create airtight seals.
They come with various sealing methods. They include adhesive seals, heat seals, and zipper closures. Adhesive seals allow users to press two surfaces together to form a secure bond. Heat seals require the application of heat to fuse two layers of plastic, creating an airtight and moisture-proof seal. Zipper closures provide a reusable sealing option.
Evidence bags are not meant to be reused. In addition, they must be stored in a cool, dry location away from direct sunlight to preserve their integrity. Cleaning the area around the bag's closure before use also ensures that contaminants do not transfer to the evidence.
Most evidence bags have built-in tamper-evident features. These features leave visible markings or damage the bag if it is opened and resealed. This internal modification ensures that evidence is not altered or contaminated.
